diff --git a/404.html b/404.html
index c472b4ea0a..00948f85fd 100644
--- a/404.html
+++ b/404.html
@@ -5,7 +5,7 @@
 <style type="text/css" media="screen">
   .container {
     margin: 10px auto;
-    max-width: 600px;
+    max-width: 786px;
     text-align: center;
   }
   h1 {
diff --git a/README.md b/README.md
index 15f2183800..8d3d5126bc 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,9 @@
 # Jekyll Theme - Mundana by WowThemes.net
 
-[Live Demo](https://wowthemesnet.github.io/mundana-theme-jekyll/) &nbsp; | &nbsp; 
-[Download](https://github.com/wowthemesnet/mundana-theme-jekyll/archive/master.zip) &nbsp; | &nbsp; 
-[Buy me a coffe](https://www.wowthemes.net/donate/) &nbsp; | &nbsp; [Documentation](https://bootstrapstarter.com/bootstrap-templates/mundana-theme-jekyll/) &nbsp; | &nbsp; 
-[WordPress version](https://www.wowthemes.net/themes/mundana-wordpress/) 
+[Live Demo](https://wowthemesnet.github.io/mundana-theme-jekyll/) &nbsp; | &nbsp;
+[Download](https://github.com/wowthemesnet/mundana-theme-jekyll/archive/master.zip) &nbsp; | &nbsp;
+[Buy me a coffe](https://www.wowthemes.net/donate/) &nbsp; | &nbsp; [Documentation](https://bootstrapstarter.com/bootstrap-templates/mundana-theme-jekyll/) &nbsp; | &nbsp;
+[WordPress version](https://www.wowthemes.net/themes/mundana-wordpress/)
 
 ![mundana jekyll theme screenshot](assets/images/screenshot.jpg)
 
@@ -19,7 +19,7 @@
 
    `git clone https://github.com/YOUR-USERNAME/mundana-theme-jekyll.git`
 
-3. **Create a branch**: 
+3. **Create a branch**:
 
    `git checkout -b <my-new-feature-or-fix>`
 
@@ -42,7 +42,7 @@ That's it! Soon I'll be merging your changes into the master branch of this proj
 
 Copyright (C) 2019 WowThemes.net.
 
-Theme designed and developed by [Sal](https://www.wowthemes.net), *free* under MIT license. 
+Theme designed and developed by [Sal](https://www.wowthemes.net), *free* under MIT license.
 
 <a href="https://www.wowthemes.net/donate/" target="_blank"><img src="https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png" alt="Buy Me A Coffee" style="height: auto !important;width: auto !important;" ></a>
 
diff --git a/_config.yml b/_config.yml
index b1d59f2aeb..d08468f289 100644
--- a/_config.yml
+++ b/_config.yml
@@ -3,6 +3,7 @@ name: 'Mundana'
 description: 'Mundana is a free Jekyll theme for awesome people like you, Medium like.'
 logo: 'assets/images/logo.png'
 favicon: 'assets/images/favicon.ico'
+host: 'https://wowthemesnet.github.io'
 baseurl: '/mundana-theme-jekyll'
 disqus: 'demowebsite'
 email: 'wowthemesnet@gmail.com'
@@ -62,4 +63,4 @@ paginate: 10
 
 
 # Exclude metadata and development time dependencies (like Grunt plugins)
-exclude: [README.markdown, package.json, grunt.js, Gruntfile.js, Gruntfile.coffee, node_modules]
\ No newline at end of file
+exclude: [Gemfile, Gemfile.lock, docker-compose.yml, README.md, package.json, grunt.js, Gruntfile.js, Gruntfile.coffee, node_modules]
diff --git a/_includes/comments.html b/_includes/comments.html
index e5ba63fe83..2ed5623fec 100644
--- a/_includes/comments.html
+++ b/_includes/comments.html
@@ -4,7 +4,7 @@
     <div id="disqus_thread">
     </div>
     <script type="text/javascript">
-        var disqus_shortname = '{{site.disqus}}'; 
+        var disqus_shortname = '{{site.disqus}}';
         var disqus_developer = 0;
         (function() {
             var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
diff --git a/_includes/menu-header.html b/_includes/menu-header.html
index d0bcf81edd..830a47391f 100644
--- a/_includes/menu-header.html
+++ b/_includes/menu-header.html
@@ -4,17 +4,17 @@
 <a class="nav-link" href="{{site.baseurl}}/index.html">Home</a>
 </li>
 <li class="nav-item">
-<a class="nav-link" href="{{site.baseurl}}/authors-list.html">Authors</a>
+<a class="nav-link" href="{{site.baseurl}}/authors/">Authors</a>
 </li>
 <li class="nav-item">
 <a class="nav-link" href="{{site.baseurl}}/contact.html">Contact</a>
 </li>
 <li class="nav-item">
-<a target="_blank" class="nav-link" href="https://www.wowthemes.net/themes/mundana-wordpress/">WP</a>
+<a target="_blank" class="nav-link" rel="noopener" href="https://www.wowthemes.net/themes/mundana-wordpress/">WP</a>
 </li>
 <li class="nav-item">
-<a target="_blank" class="nav-link" href="https://www.wowthemes.net/themes/mundana-ghost/">Ghost</a>
+<a target="_blank" class="nav-link" rel="noopener" href="https://www.wowthemes.net/themes/mundana-ghost/">Ghost</a>
 </li>
 <li class="nav-item">
-<a target="_blank" class="nav-link" href="https://www.wowthemes.net/donate/">Buy me a coffee <i class="fa fa-coffee text-danger"></i></a>
+<a target="_blank" class="nav-link" rel="noopener" href="https://www.wowthemes.net/donate/">Buy me a coffee <i class="fa fa-coffee text-danger"></i></a>
 </li>
diff --git a/_includes/meta-read-time.html b/_includes/meta-read-time.html
index ce5f97d7d2..e27adaa357 100644
--- a/_includes/meta-read-time.html
+++ b/_includes/meta-read-time.html
@@ -6,4 +6,3 @@
     {{ words | divided_by:180 }} mins read
   {% endif %}
 </span>
-    
\ No newline at end of file
diff --git a/_includes/search-lunr.html b/_includes/search-lunr.html
index 5dd0904964..360c6ad420 100644
--- a/_includes/search-lunr.html
+++ b/_includes/search-lunr.html
@@ -1,4 +1,4 @@
-<script src="{{site.baseurl}}/assets/js/lunr.js"></script>
+<script src="{{site.baseurl}}/assets/js/lunr.min.js"></script>
 
 <script>
 $(function() {
@@ -7,23 +7,26 @@
         $( "body" ).removeClass( "modal-open" );
     });
 });
-    
+
 {% assign counter = 0 %}
-var documents = [{% for page in site.pages %}{% if page.url contains '.xml' or page.url contains 'assets' %}{% else %}{
-    "id": {{ counter }},
-    "url": "{{ site.url }}{{site.baseurl}}{{ page.url }}",
-    "title": "{{ page.title }}",
-    "body": "{{ page.content | markdownify | replace: '.', '. ' | replace: '</h2>', ': ' | replace: '</h3>', ': ' | replace: '</h4>', ': ' | replace: '</p>', ' ' | strip_html | strip_newlines | replace: '  ', ' ' | replace: '"', ' ' }}"{% assign counter = counter | plus: 1 %}
-    }, {% endif %}{% endfor %}{% for page in site.without-plugin %}{
-    "id": {{ counter }},
-    "url": "{{ site.url }}{{site.baseurl}}{{ page.url }}",
-    "title": "{{ page.title }}",
-    "body": "{{ page.content | markdownify | replace: '.', '. ' | replace: '</h2>', ': ' | replace: '</h3>', ': ' | replace: '</h4>', ': ' | replace: '</p>', ' ' | strip_html | strip_newlines | replace: '  ', ' ' | replace: '"', ' ' }}"{% assign counter = counter | plus: 1 %}
-    }, {% endfor %}{% for page in site.posts %}{
-    "id": {{ counter }},
-    "url": "{{ site.url }}{{site.baseurl}}{{ page.url }}",
-    "title": "{{ page.title }}",
-    "body": "{{ page.date | date: "%Y/%m/%d" }} - {{ page.content | markdownify | replace: '.', '. ' | replace: '</h2>', ': ' | replace: '</h3>', ': ' | replace: '</h4>', ': ' | replace: '</p>', ' ' | strip_html | strip_newlines | replace: '  ', ' ' | replace: '"', ' ' }}"{% assign counter = counter | plus: 1 %}
+var documents = [
+    {% for page in site.pages %}{% if page.url contains '.xml' or page.url contains 'assets' %}{% else %}{
+        "id": {{ counter }},
+        "url": "{{ site.url }}{{site.baseurl}}{{ page.url }}",
+        "title": "{{ page.title }}",
+        "body": "{{ page.content | markdownify | replace: '.', '. ' | replace: '</h2>', ': ' | replace: '</h3>', ': ' | replace: '</h4>', ': ' | replace: '</p>', ' ' | strip_html | strip_newlines | replace: '  ', ' ' | replace: '"', ' ' }}"{% assign counter = counter | plus: 1 %}
+    }, {% endif %}{% endfor %}
+    {% for page in site.without-plugin %}{
+        "id": {{ counter }},
+        "url": "{{ site.url }}{{site.baseurl}}{{ page.url }}",
+        "title": "{{ page.title }}",
+        "body": "{{ page.content | markdownify | replace: '.', '. ' | replace: '</h2>', ': ' | replace: '</h3>', ': ' | replace: '</h4>', ': ' | replace: '</p>', ' ' | strip_html | strip_newlines | replace: '  ', ' ' | replace: '"', ' ' }}"{% assign counter = counter | plus: 1 %}
+    }, {% endfor %}
+    {% for page in site.posts %}{
+        "id": {{ counter }},
+        "url": "{{ site.url }}{{site.baseurl}}{{ page.url }}",
+        "title": "{{ page.title }}",
+        "body": "{{ page.date | date: "%Y/%m/%d" }} - {{ page.content | markdownify | replace: '.', '. ' | replace: '</h2>', ': ' | replace: '</h3>', ': ' | replace: '</h4>', ': ' | replace: '</p>', ' ' | strip_html | strip_newlines | replace: '  ', ' ' | replace: '"', ' ' }}"{% assign counter = counter | plus: 1 %}
     }{% if forloop.last %}{% else %}, {% endif %}{% endfor %}];
 
 var idx = lunr(function () {
@@ -37,11 +40,11 @@
 });
 
 
-    
+
 function lunr_search(term) {
     $('#lunrsearchresults').show( 1000 );
     $( "body" ).addClass( "modal-open" );
-    
+
     document.getElementById('lunrsearchresults').innerHTML = '<div id="resultsmodal" class="modal fade show d-block"  tabindex="-1" role="dialog" aria-labelledby="resultsmodal"> <div class="modal-dialog shadow-lg" role="document"> <div class="modal-content"> <div class="modal-header" id="modtit"> <button type="button" class="close" id="btnx" data-dismiss="modal" aria-label="Close"> &times; </button> </div> <div class="modal-body"> <ul class="mb-0"> </ul>    </div> <div class="modal-footer"><button id="btnx" type="button" class="btn btn-secondary btn-sm" data-dismiss="modal">Close</button></div></div> </div></div>';
     if(term) {
         document.getElementById('modtit').innerHTML = "<h5 class='modal-title'>Search results for '" + term + "'</h5>" + document.getElementById('modtit').innerHTML;
@@ -77,5 +80,5 @@
 
 
 <form class="bd-search hidden-sm-down" onSubmit="return lunr_search(document.getElementById('lunrsearch').value);">
-<input type="text" class="form-control text-small"  id="lunrsearch" name="q" value="" placeholder="Type keyword and enter..."> 
+<input type="text" class="form-control text-small"  id="lunrsearch" name="q" value="" placeholder="Type keyword and enter...">
 </form>
\ No newline at end of file
diff --git a/_includes/sidebar-featured.html b/_includes/sidebar-featured.html
index eba1f353af..e7f401a2fe 100644
--- a/_includes/sidebar-featured.html
+++ b/_includes/sidebar-featured.html
@@ -1,7 +1,7 @@
 <div class="sticky-top sticky-top-offset">
-    <h4 class="font-weight-bold spanborder"><span>Featured</span></h4>  
+    <h4 class="font-weight-bold spanborder"><span>Featured</span></h4>
     <ol class="list-featured">				
-        {% for post in site.tags.featured %}                
+        {% for post in site.tags.featured %}
             <li class="mb-4">
             <span>
                 <h6 class="font-weight-bold">
@@ -15,7 +15,7 @@ <h6 class="font-weight-bold">
                     </span>
                 </span>
             </span>
-            </li>                
-        {% endfor %}   
+            </li>
+        {% endfor %}
     </ol>
-</div> 
\ No newline at end of file
+</div>
\ No newline at end of file
diff --git a/_includes/sidebar.html b/_includes/sidebar.html
index 3fd15ef6db..3373fa91b4 100644
--- a/_includes/sidebar.html
+++ b/_includes/sidebar.html
@@ -1,7 +1,7 @@
 <h5 class="mb-3">Mundana Jekyll Theme</h5>
 
-<p>Hi! The website you are previewing is a demonstration for Mundana Jekyll theme, hosted on Github, made by <a href="https://www.wowthemes.net/donate/">Sal</a>.</p>
+<p>Hi! The website you are previewing is a demonstration for Mundana Jekyll theme, hosted on Github, made by <a rel="noopener" href="https://www.wowthemes.net/donate/">Sal</a>.</p>
 
-<a target="_blank" href="https://www.wowthemes.net/mundana-jekyll-theme/" class="btn btn-warning d-block mb-2"><i class="fa fa-file"></i> Documentation</a>
+<a target="_blank" rel="noopener" href="https://www.wowthemes.net/mundana-jekyll-theme/" class="btn btn-warning d-block mb-2"><i class="fa fa-file"></i> Documentation</a>
 
-<a target="_blank" class="btn btn-danger d-block" href="https://www.wowthemes.net/donate/"><i class="fa fa-coffee"></i> Buy me a coffee</a> 
\ No newline at end of file
+<a target="_blank" rel="noopener" class="btn btn-danger d-block" href="https://www.wowthemes.net/donate/"><i class="fa fa-coffee"></i> Buy me a coffee</a>
\ No newline at end of file
diff --git a/_includes/tracking-footer.html b/_includes/tracking-footer.html
index 90d5adb985..f559190541 100644
--- a/_includes/tracking-footer.html
+++ b/_includes/tracking-footer.html
@@ -1 +1 @@
-<!-- All this area goes before </body> closing tag --> 
+<!-- All this area goes before </body> closing tag -->
diff --git a/_includes/tracking-header.html b/_includes/tracking-header.html
index dac143309f..b2317d6a87 100644
--- a/_includes/tracking-header.html
+++ b/_includes/tracking-header.html
@@ -1 +1 @@
-<!-- This goes before </head> closing tag, Google Analytics can be placed here --> 
\ No newline at end of file
+<!-- This goes before </head> closing tag, Google Analytics can be placed here -->
\ No newline at end of file
diff --git a/_layouts/default.html b/_layouts/default.html
index cf6a35d8cf..470a8c94f5 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -23,14 +23,12 @@
     <link rel="stylesheet" href="{{site.baseurl}}/assets/css/theme.css">
 
     <!-- Jquery on header to make sure everything works, the rest  of the scripts in footer for fast loading -->
-    <script
-    src="https://code.jquery.com/jquery-3.3.1.min.js"
-    integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
-    crossorigin="anonymous"></script>
+    <script src="https://code.jquery.com/jquery-3.4.1.min.js"
+            integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo="
+            crossorigin="anonymous"></script>
 
     {% include tracking-header.html %}
 
-
 </head>
 
 <body class="{% if page.url == "/" %} homefirstpage {% endif %}">
@@ -44,7 +42,7 @@
         </button>
         <div class="navbar-collapse collapse" id="navbarColor02" style="">
             <ul class="navbar-nav mr-auto d-flex align-items-center">
-               {% include menu-header.html %}
+                {% include menu-header.html %}
             </ul>
             <ul class="navbar-nav ml-auto d-flex align-items-center">
                 {% include search-lunr.html %}
@@ -63,29 +61,27 @@
         {{ content }}
     </main>
 
-
-    <!-- Scripts: popper, bootstrap, theme, lunr -->
+    <!-- Scripts: popper, bootstrap, theme -->
     <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
 
-    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
+    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
 
     <script src="{{site.baseurl}}/assets/js/theme.js"></script>
 
-
     <!-- Footer -->
     <footer class="bg-white border-top p-3 text-muted small">
         <div class="container">
         <div class="row align-items-center justify-content-between">
             <div>
                 <span class="navbar-brand mr-2 mb-0"><strong>Mundana</strong></span>
-                <span>Copyright © <script>document.write(new Date().getFullYear())</script>.</span>
+                <span>Copyright © {{ "now" | date: "%Y" }}.</span>
 
                 <!--  Github Repo Star Btn-->
-                <a class="text-dark ml-1" target="_blank" href="https://github.com/wowthemesnet/mundana-theme-jekyll"><i class="fab fa-github"></i> Fork on Github</a>
+                <a class="text-dark ml-1" target="_blank" rel="noopener" href="https://github.com/wowthemesnet/mundana-theme-jekyll"><i class="fab fa-github"></i> Fork on Github</a>
 
             </div>
             <div>
-                Made with <a target="_blank" class="text-dark font-weight-bold" href="https://www.wowthemes.net/mundana-jekyll-theme/"> Mundana Jekyll Theme </a> by <a class="text-dark" target="_blank" href="https://www.wowthemes.net">WowThemes</a>.
+                Made with <a target="_blank" class="text-dark font-weight-bold" rel="noopener" href="https://www.wowthemes.net/mundana-jekyll-theme/"> Mundana Jekyll Theme </a> by <a class="text-dark" target="_blank" rel="noopener" href="https://www.wowthemes.net">WowThemes</a>.
             </div>
         </div>
         </div>
diff --git a/_layouts/page-sidebar.html b/_layouts/page-sidebar.html
index 960817c49c..a05e11b698 100644
--- a/_layouts/page-sidebar.html
+++ b/_layouts/page-sidebar.html
@@ -5,9 +5,9 @@
 <h3 class="font-weight-bold spanborder"><span>{{page.title}}</span></h3>
 <div class="row">
     <div class="col-md-8">
-    {% if page.image %} 
-    <img class="card-img-top mb-5 shadow-lg" src="{% if page.image contains "://" %}{{ page.image }}{% else %}{{ page.image | absolute_url }}{% endif %}" alt="{{ page.title }}"> 
-    {% endif %} 
+    {% if page.image %}
+    <img class="card-img-top mb-5 shadow-lg" src="{% if page.image contains "://" %}{{ page.image }}{% else %}{{ page.image | absolute_url }}{% endif %}" alt="{{ page.title }}">
+    {% endif %}
     <div class="page-content">
         {{ content }}
         <!-- Comments -->
@@ -19,5 +19,5 @@ <h3 class="font-weight-bold spanborder"><span>{{page.title}}</span></h3>
     <div class="col-md-4">
         {% include sidebar.html %}
     </div>
-</div>  
+</div>
 </div>
\ No newline at end of file
diff --git a/_layouts/post.html b/_layouts/post.html
index 52b8739a30..082dab9e41 100644
--- a/_layouts/post.html
+++ b/_layouts/post.html
@@ -3,7 +3,7 @@
 ---
 {% assign author = site.authors[page.author] %}
 <div class="container">
-<div class="jumbotron jumbotron-fluid mb-3 pl-0 pt-0 pb-0 bg-white position-relative">
+    <div class="jumbotron jumbotron-fluid mb-3 pl-0 pt-0 pb-0 bg-white position-relative">
 		<div class="h-100 tofront">
 			<div class="row {% if page.image %} justify-content-between {% else %} justify-content-center {% endif %}">
 				<div class="{% if page.image %} col-md-6 {% else %} col-md-8 {% endif %} pr-0 pr-md-4 pt-4 pb-4 align-self-center">
@@ -40,8 +40,8 @@ <h1 class="display-4 mb-4 article-headline">{{ page.title }}</h1>
 
 <div class="container-lg pt-4 pb-4">
 	<div class="row justify-content-center">
-        
-        
+
+
         <!-- Share -->
 		<div class="col-lg-2 pr-4 mb-4 col-md-12">
 			<div class="sticky-top sticky-top-offset text-center">
@@ -60,15 +60,15 @@ <h1 class="display-4 mb-4 article-headline">{{ page.title }}</h1>
 				</div>
 			</div>
 		</div>
-        
-        
+
+
 		<div class="col-md-12 col-lg-8">
-            
+
             <!-- Article -->
-			<article class="article-post">                
-			{{ content }}                
+			<article class="article-post">
+			{{ content }}
 			</article>
-			
+
 			<!-- Tags -->
 			<div class="mb-4">
 				<span class="taglist">
@@ -77,7 +77,7 @@ <h1 class="display-4 mb-4 article-headline">{{ page.title }}</h1>
 				{% endfor %}
 				</span>
 			</div>
- 
+
             <!-- Mailchimp Subscribe Form -->
             {% if site.mailchimp-list %}
 			<div class="border p-5 bg-lightblue">
@@ -90,12 +90,12 @@ <h5 class="font-weight-bold">Join Newsletter</h5>
 						<div class="row">
                             <form action="{{site.mailchimp-list}}" method="post" name="mc-embedded-subscribe-form" class="wj-contact-form validate w-100" target="_blank" novalidate>
                             <div class="mc-field-group">
-							
+
 								<input type="email" placeholder="Enter e-mail address" name="EMAIL" class="required email form-control w-100" id="mce-EMAIL" autocomplete="on" required>
-							
-							
+
+
 								<button type="submit" value="Subscribe" name="subscribe" class="heart btn btn-success btn-block w-100 mt-2">Subscribe</button>
-							
+
                             </div>
                             </form>
 						</div>
@@ -103,31 +103,31 @@ <h5 class="font-weight-bold">Join Newsletter</h5>
 				</div>
 			</div>
             {% endif %}
-            
-            
+
+
              <!-- Author Box -->
-                {% if page.author %}				
+                {% if page.author %}
 				<div class="row mt-5">
 					<div class="col-md-2 align-self-center">
                          {% if author.avatar %}
                         <img class="rounded-circle" src="{{site.baseurl}}/{{author.avatar}}" alt="{{author.name}}" width="90"/>
-                        {% endif %} 
+                        {% endif %}
 					</div>
-					<div class="col-md-10">		
+					<div class="col-md-10">
                         <h5 class="font-weight-bold">Written by {{ author.name }} {% if author.twitter %}<span><a target="_blank" href="{{ author.twitter }}" class="btn btn-outline-success btn-sm btn-round ml-2">Follow</a></span>{% endif %}</h5>
-						{{ author.bio }}					
+						{{ author.bio }}
 					</div>
-				</div>				
+				</div>
                 {% endif %}
-            
+
             <!-- Comments -->
             {% if page.comments != false %}
                 {% include comments.html %}
             {% endif %}
-            
+
 		</div>
-        
-        
+
+
 	</div>
 </div>
 
diff --git a/_pages/author-jane.html b/_pages/author-jane.html
index 2cf73525d7..757bdc48a3 100644
--- a/_pages/author-jane.html
+++ b/_pages/author-jane.html
@@ -1,7 +1,7 @@
 ---
 title: "Jane"
 layout: default
-permalink: "/author-jane.html"
+permalink: "/authors/jane/"
 ---
 <div class="container">
 <div class="row justify-content-center">
diff --git a/_pages/author-sal.html b/_pages/author-sal.html
index efc5b55ed5..e436c57df8 100644
--- a/_pages/author-sal.html
+++ b/_pages/author-sal.html
@@ -1,7 +1,7 @@
 ---
 title: "Sal"
 layout: default
-permalink: "/author-sal.html"
+permalink: "/authors/sal/"
 ---
 <div class="container">
 <div class="row justify-content-center">
diff --git a/_pages/authors-list.html b/_pages/authors-list.html
index dc6e53d1c8..5552efd26b 100644
--- a/_pages/authors-list.html
+++ b/_pages/authors-list.html
@@ -1,7 +1,7 @@
 ---
 title: "Authors"
 layout: default
-permalink: "/authors-list.html"
+permalink: "/authors/"
 ---
 
 <div class="container">
@@ -13,15 +13,17 @@ <h4 class="font-weight-bold spanborder"><span>{{page.title}}</span></h4>
             <div class="row">
             <div class="col-md-3 mb-4 mb-md-0"><img alt="{{ author[1].name }}" src="{{site.baseurl}}/{{ author[1].avatar }}" class="rounded-circle" height="80" width="80"></div>
             <div class="col-md-9">
-            <a href="{{site.baseurl}}/author-{{ author[1].name | slugify }}">
+            <a href="{{site.baseurl}}/authors/{{ author[1].name | slugify }}">
             <h4 class="text-dark mb-0"> {{ author[1].name }} </h4>
             <small class="d-inline-block mt-1 mb-3 font-weight-normal">(View Posts)</small>
             <div class="excerpt">{{ author[1].bio }}</div>
             </a>
-            <div class="icon-block mt-3 d-flex justify-content-between">  
+            <div class="icon-block mt-3 d-flex justify-content-between">
             <div>
-            <a target="_blank" href="{{ author[1].twitter }}"><i class="fab fa-twitter text-muted" aria-hidden="true"></i></a>  &nbsp;
-            <a target="_blank" href="{{ author[1].site }}"><i class="fa fa-globe text-muted" aria-hidden="true"></i></a> &nbsp;
+            {% if author[1].twitter contains 'twitter.com/' %}<a target="_blank" href="{{ author[1].twitter }}"><i class="fab fa-twitter text-muted" aria-hidden="true"></i></a>  &nbsp;{% endif %}
+            {% if author[1].site contains '://' %}<a target="_blank" href="{{ author[1].site }}"><i class="fa fa-globe text-muted" aria-hidden="true"></i></a> &nbsp;{% endif %}
+            {% if author[1].github contains 'github.com/' %}<a target="_blank" href="{{ author[1].github }}"><i class="fab fa-github text-muted" aria-hidden="true"></i></a> &nbsp;{% endif %}
+            {% if author[1].gitlab contains 'gitlab.com/' %}<a target="_blank" href="{{ author[1].gitlab }}"><i class="fab fa-gitlab text-muted" aria-hidden="true"></i></a> &nbsp;{% endif %}
             </div>
             </div>
             </div>
diff --git a/_pages/categories.html b/_pages/categories.html
index 25162d647a..c19f186650 100644
--- a/_pages/categories.html
+++ b/_pages/categories.html
@@ -8,15 +8,15 @@
     <div class="row justify-content-center">
         <div class="col-md-8">
         <h1 class="font-weight-bold title h6 text-uppercase mb-4">Categories</h1>
-            
-        {% for category in site.categories %} 
+
+        {% for category in site.categories %}
         <h4 class="font-weight-bold spanborder text-capitalize" id="{{ category[0] | downcase }}"><span>{{ category[0] }}</span></h4>
-            
+
         {% assign pages_list = category[1] %}
         {% for post in pages_list %}
         {% if post.title != null %}
           {% if group == null or group == post.group %}
-         
+
             {% include main-loop-card.html %}
           {% endif %}
         {% endif %}
@@ -27,10 +27,10 @@ <h4 class="font-weight-bold spanborder text-capitalize" id="{{ category[0] | dow
         {% endfor %}
 
         </div>
-        
+
             <div class="col-md-4">
-        {% include sidebar-featured.html %}    
+        {% include sidebar-featured.html %}
     </div>
-        
+
     </div>
 </div>
\ No newline at end of file
diff --git a/_pages/contact.md b/_pages/contact.html
similarity index 91%
rename from _pages/contact.md
rename to _pages/contact.html
index 4b923e52e3..ac29734485 100644
--- a/_pages/contact.md
+++ b/_pages/contact.html
@@ -3,7 +3,7 @@
 permalink: "/contact.html"
 ---
 
-<form action="https://formspree.io/{{site.email}}" method="POST">    
+<form action="https://formspree.io/{{site.email}}" method="POST">
 <p class="mb-4">Please send your message to {{site.name}}. We will reply as soon as possible!</p>
 <div class="form-group row">
 <div class="col-md-6">
@@ -13,6 +13,6 @@
 <input class="form-control" type="email" name="_replyto" placeholder="E-mail Address*" required>
 </div>
 </div>
-<textarea rows="8" class="form-control mb-3" name="message" placeholder="Message*" required></textarea>    
+<textarea rows="8" class="form-control mb-3" name="message" placeholder="Message*" required></textarea>
 <input class="btn btn-success" type="submit" value="Send">
-</form>
\ No newline at end of file
+</form>
diff --git a/_pages/privacy-policy.md b/_pages/privacy-policy.md
index 266450542d..3e2c1c2344 100644
--- a/_pages/privacy-policy.md
+++ b/_pages/privacy-policy.md
@@ -18,7 +18,7 @@ Where necessary, this website uses cookies to store information about a visitor
 
 #### Advertisement and Other Third Parties
 
-Advertising partners and other third parties may use cookies, scripts and/or web beacons to track visitor activities on this website in order to display advertisements and other useful information. Such tracking is done directly by the third parties through their own servers and is subject to their own privacy policies. This website has no access or control over these cookies, scripts and/or web beacons that may be used by third parties. Learn how to [opt out of Google’s cookie usage](http://www.google.com/privacy_ads.html).
+Advertising partners and other third parties may use cookies, scripts and/or web beacons to track visitor activities on this website in order to display advertisements and other useful information. Such tracking is done directly by the third parties through their own servers and is subject to their own privacy policies. This website has no access or control over these cookies, scripts and/or web beacons that may be used by third parties. Learn how to [opt out of Google’s cookie usage](https://www.google.com/privacy_ads.html).
 
 
 #### Links to Third Party Websites
diff --git a/_pages/tags.html b/_pages/tags.html
index 5dabcdcbc9..094e160dd6 100644
--- a/_pages/tags.html
+++ b/_pages/tags.html
@@ -8,15 +8,15 @@
     <div class="row justify-content-center">
         <div class="col-md-8">
         <h1 class="font-weight-bold title h6 text-uppercase mb-4">Tags</h1>
-            
-        {% for tag in site.tags %} 
+
+        {% for tag in site.tags %}
         <h4 class="font-weight-bold spanborder text-capitalize" id="{{ tag[0] | downcase }}"><span>{{ tag[0] }}</span></h4>
-            
+
         {% assign pages_list = tag[1] %}
         {% for post in pages_list %}
         {% if post.title != null %}
           {% if group == null or group == post.group %}
-         
+
             {% include main-loop-card.html %}
           {% endif %}
         {% endif %}
@@ -27,10 +27,10 @@ <h4 class="font-weight-bold spanborder text-capitalize" id="{{ tag[0] | downcase
         {% endfor %}
 
         </div>
-        
+
             <div class="col-md-4">
-        {% include sidebar-featured.html %}    
+        {% include sidebar-featured.html %}
     </div>
-        
+
     </div>
 </div>
\ No newline at end of file
diff --git a/assets/css/main.css b/assets/css/main.css
index a38faa45a1..b3f00d78c8 100644
--- a/assets/css/main.css
+++ b/assets/css/main.css
@@ -64,7 +64,7 @@ article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
 
 body {
   margin: 0;
-  font-family: "Segoe UI", "Helvetica Neue", "Arial";
+  font-family: "Segoe UI", "Helvetica Neue", "Arial", sans-serif;
   font-size: 1rem;
   font-weight: 400;
   line-height: 1.6;
@@ -90,7 +90,6 @@ p {
 
 abbr[title],
 abbr[data-original-title] {
-  text-decoration: underline;
   -webkit-text-decoration: underline dotted;
           text-decoration: underline dotted;
   cursor: help;
@@ -458,14 +457,20 @@ pre {
   max-height: 340px;
   overflow-y: scroll; }
 
-.container {
-  width: 100%;
+.container, .container-fluid, .container-lg {
   padding-right: 15px;
   padding-left: 15px;
   margin-right: auto;
   margin-left: auto; }
-  @media (min-width: 576px) {
-    .container {
+
+.container, .container-fluid {
+  width: 100%; }
+
+.container-lg {
+  max-width: 1140px; }
+
+@media (min-width: 576px) {
+  .container {
       max-width: 540px; } }
   @media (min-width: 768px) {
     .container {
@@ -473,16 +478,9 @@ pre {
   @media (min-width: 992px) {
     .container {
       max-width: 960px; } }
-  @media (min-width: 1200px) {
-    .container {
-      max-width: 1140px; } }
-
-.container-fluid {
-  width: 100%;
-  padding-right: 15px;
-  padding-left: 15px;
-  margin-right: auto;
-  margin-left: auto; }
+@media (min-width: 1200px) {
+  .container {
+    max-width: 1070px; } }
 
 .row {
   display: flex;
@@ -1502,7 +1500,7 @@ textarea.form-control {
   font-size: 85%;
   color: #03a87c; }
 
-.valid-tooltip {
+.valid-tooltip, .invalid-tooltip {
   position: absolute;
   top: 100%;
   z-index: 5;
@@ -1513,11 +1511,13 @@ textarea.form-control {
   font-size: 0.875rem;
   line-height: 1.6;
   color: #fff;
-  background-color: rgba(3, 168, 124, 0.9);
   border-radius: 0.25rem; }
 
-.was-validated .form-control:valid, .form-control.is-valid, .was-validated
-.custom-select:valid,
+.valid-tooltip {
+  background-color: rgba(3, 168, 124, 0.9); }
+
+.was-validated .form-control:valid, .form-control.is-valid,
+.was-validated .custom-select:valid,
 .custom-select.is-valid {
   border-color: #03a87c; }
   .was-validated .form-control:valid:focus, .form-control.is-valid:focus, .was-validated
@@ -1585,18 +1585,7 @@ textarea.form-control {
   color: #ea2f65; }
 
 .invalid-tooltip {
-  position: absolute;
-  top: 100%;
-  z-index: 5;
-  display: none;
-  max-width: 100%;
-  padding: 0.25rem 0.5rem;
-  margin-top: .1rem;
-  font-size: 0.875rem;
-  line-height: 1.6;
-  color: #fff;
-  background-color: rgba(234, 47, 101, 0.9);
-  border-radius: 0.25rem; }
+  background-color: rgba(234, 47, 101, 0.9); }
 
 .was-validated .form-control:invalid, .form-control.is-invalid, .was-validated
 .custom-select:invalid,
@@ -3635,71 +3624,111 @@ input[type="button"].btn-block {
 
 .card-deck {
   display: flex;
-  flex-direction: column; }
+  flex-direction: column;
+}
+
+.card-deck .card {
+  margin-bottom: 15px;
+}
+
+@media (min-width: 576px) {
+  .card-deck {
+    flex-flow: row wrap;
+    margin-right: -15px;
+    margin-left: -15px;
+  }
+
   .card-deck .card {
-    margin-bottom: 15px; }
-  @media (min-width: 576px) {
-    .card-deck {
-      flex-flow: row wrap;
-      margin-right: -15px;
-      margin-left: -15px; }
-      .card-deck .card {
-        display: flex;
-        flex: 1 0 0%;
-        flex-direction: column;
-        margin-right: 15px;
-        margin-bottom: 0;
-        margin-left: 15px; } }
+    display: flex;
+        flex: 1 0 0;
+    flex-direction: column;
+    margin-right: 15px;
+    margin-bottom: 0;
+    margin-left: 15px;
+  }
+}
 
 .card-group {
   display: flex;
-  flex-direction: column; }
+  flex-direction: column;
+}
+
+.card-group > .card {
+  margin-bottom: 15px;
+}
+
+@media (min-width: 576px) {
+  .card-group {
+    flex-flow: row wrap;
+  }
+
   .card-group > .card {
-    margin-bottom: 15px; }
-  @media (min-width: 576px) {
-    .card-group {
-      flex-flow: row wrap; }
-      .card-group > .card {
-        flex: 1 0 0%;
-        margin-bottom: 0; }
-        .card-group > .card + .card {
-          margin-left: 0;
-          border-left: 0; }
-        .card-group > .card:first-child {
-          border-top-right-radius: 0;
-          border-bottom-right-radius: 0; }
-          .card-group > .card:first-child .card-img-top,
-          .card-group > .card:first-child .card-header {
-            border-top-right-radius: 0; }
-          .card-group > .card:first-child .card-img-bottom,
-          .card-group > .card:first-child .card-footer {
-            border-bottom-right-radius: 0; }
-        .card-group > .card:last-child {
-          border-top-left-radius: 0;
-          border-bottom-left-radius: 0; }
-          .card-group > .card:last-child .card-img-top,
-          .card-group > .card:last-child .card-header {
-            border-top-left-radius: 0; }
-          .card-group > .card:last-child .card-img-bottom,
-          .card-group > .card:last-child .card-footer {
-            border-bottom-left-radius: 0; }
-        .card-group > .card:only-child {
-          border-radius: 0.25rem; }
-          .card-group > .card:only-child .card-img-top,
-          .card-group > .card:only-child .card-header {
-            border-top-left-radius: 0.25rem;
-            border-top-right-radius: 0.25rem; }
-          .card-group > .card:only-child .card-img-bottom,
-          .card-group > .card:only-child .card-footer {
-            border-bottom-right-radius: 0.25rem;
-            border-bottom-left-radius: 0.25rem; }
-        .card-group > .card:not(:first-child):not(:last-child):not(:only-child) {
-          border-radius: 0; }
-          .card-group > .card:not(:first-child):not(:last-child):not(:only-child) .card-img-top,
-          .card-group > .card:not(:first-child):not(:last-child):not(:only-child) .card-img-bottom,
-          .card-group > .card:not(:first-child):not(:last-child):not(:only-child) .card-header,
-          .card-group > .card:not(:first-child):not(:last-child):not(:only-child) .card-footer {
-            border-radius: 0; } }
+        flex: 1 0 0;
+    margin-bottom: 0;
+  }
+
+  .card-group > .card + .card {
+    margin-left: 0;
+    border-left: 0;
+  }
+
+  .card-group > .card:first-child {
+    border-top-right-radius: 0;
+    border-bottom-right-radius: 0;
+  }
+
+  .card-group > .card:first-child .card-img-top,
+  .card-group > .card:first-child .card-header {
+    border-top-right-radius: 0;
+  }
+
+  .card-group > .card:first-child .card-img-bottom,
+  .card-group > .card:first-child .card-footer {
+    border-bottom-right-radius: 0;
+  }
+
+  .card-group > .card:last-child {
+    border-top-left-radius: 0;
+    border-bottom-left-radius: 0;
+  }
+
+  .card-group > .card:last-child .card-img-top,
+  .card-group > .card:last-child .card-header {
+    border-top-left-radius: 0;
+  }
+
+  .card-group > .card:last-child .card-img-bottom,
+  .card-group > .card:last-child .card-footer {
+    border-bottom-left-radius: 0;
+  }
+
+  .card-group > .card:only-child {
+    border-radius: 0.25rem;
+  }
+
+  .card-group > .card:only-child .card-img-top,
+  .card-group > .card:only-child .card-header {
+    border-top-left-radius: 0.25rem;
+    border-top-right-radius: 0.25rem;
+  }
+
+  .card-group > .card:only-child .card-img-bottom,
+  .card-group > .card:only-child .card-footer {
+    border-bottom-right-radius: 0.25rem;
+    border-bottom-left-radius: 0.25rem;
+  }
+
+  .card-group > .card:not(:first-child):not(:last-child):not(:only-child) {
+    border-radius: 0;
+  }
+
+  .card-group > .card:not(:first-child):not(:last-child):not(:only-child) .card-img-top,
+  .card-group > .card:not(:first-child):not(:last-child):not(:only-child) .card-img-bottom,
+  .card-group > .card:not(:first-child):not(:last-child):not(:only-child) .card-header,
+  .card-group > .card:not(:first-child):not(:last-child):not(:only-child) .card-footer {
+    border-radius: 0;
+  }
+}
 
 .card-columns .card {
   margin-bottom: 0.75rem; }
@@ -4490,8 +4519,6 @@ button.close {
   margin: 0.5rem;
   pointer-events: none; }
   .modal.fade .modal-dialog {
-    transition: -webkit-transform 0.3s ease-out;
-    transition: transform 0.3s ease-out;
     transition: transform 0.3s ease-out, -webkit-transform 0.3s ease-out;
     -webkit-transform: translate(0, -25%);
             transform: translate(0, -25%); }
@@ -4598,7 +4625,6 @@ button.close {
   font-style: normal;
   font-weight: 400;
   line-height: 1.6;
-  text-align: left;
   text-align: start;
   text-decoration: none;
   text-shadow: none;
@@ -4682,7 +4708,6 @@ button.close {
   font-style: normal;
   font-weight: 400;
   line-height: 1.6;
-  text-align: left;
   text-align: start;
   text-decoration: none;
   text-shadow: none;
@@ -4832,8 +4857,6 @@ button.close {
 .carousel-item-next,
 .carousel-item-prev {
   display: block;
-  transition: -webkit-transform 0.6s ease;
-  transition: transform 0.6s ease;
   transition: transform 0.6s ease, -webkit-transform 0.6s ease; }
   @media screen and (prefers-reduced-motion: reduce) {
     .carousel-item.active,
@@ -7338,1125 +7361,3 @@ a.text-lightblue:hover, a.text-lightblue:focus {
   .table .thead-dark th {
     color: inherit;
     border-color: #dee2e6; } }
-
-/*!
- * Bootstrap Grid v4.1.3 (https://getbootstrap.com/)
- * Copyright 2011-2018 The Bootstrap Authors
- * Copyright 2011-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-@-ms-viewport {
-  width: device-width; }
-
-html {
-  box-sizing: border-box;
-  -ms-overflow-style: scrollbar; }
-
-*,
-*::before,
-*::after {
-  box-sizing: inherit; }
-
-.container {
-  width: 100%;
-  padding-right: 15px;
-  padding-left: 15px;
-  margin-right: auto;
-  margin-left: auto; }
-  @media (min-width: 576px) {
-    .container {
-      max-width: 540px; } }
-  @media (min-width: 768px) {
-    .container {
-      max-width: 720px; } }
-  @media (min-width: 992px) {
-    .container {
-      max-width: 960px; } }
-  @media (min-width: 1200px) {
-    .container {
-      max-width: 1070px; } }
-.container-lg {
-    max-width:1140px;
-    padding-right: 15px;
-    padding-left: 15px;
-    margin-right: auto;
-    margin-left: auto;
-}
-
-.container-fluid {
-  width: 100%;
-  padding-right: 15px;
-  padding-left: 15px;
-  margin-right: auto;
-  margin-left: auto; }
-
-.row {
-  display: flex;
-  flex-wrap: wrap;
-  margin-right: -15px;
-  margin-left: -15px; }
-
-.no-gutters {
-  margin-right: 0;
-  margin-left: 0; }
-  .no-gutters > .col,
-  .no-gutters > [class*="col-"] {
-    padding-right: 0;
-    padding-left: 0; }
-
-.col-1, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11, .col-12, .col,
-.col-auto, .col-sm-1, .col-sm-2, .col-sm-3, .col-sm-4, .col-sm-5, .col-sm-6, .col-sm-7, .col-sm-8, .col-sm-9, .col-sm-10, .col-sm-11, .col-sm-12, .col-sm,
-.col-sm-auto, .col-md-1, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6, .col-md-7, .col-md-8, .col-md-9, .col-md-10, .col-md-11, .col-md-12, .col-md,
-.col-md-auto, .col-lg-1, .col-lg-2, .col-lg-3, .col-lg-4, .col-lg-5, .col-lg-6, .col-lg-7, .col-lg-8, .col-lg-9, .col-lg-10, .col-lg-11, .col-lg-12, .col-lg,
-.col-lg-auto, .col-xl-1, .col-xl-2, .col-xl-3, .col-xl-4, .col-xl-5, .col-xl-6, .col-xl-7, .col-xl-8, .col-xl-9, .col-xl-10, .col-xl-11, .col-xl-12, .col-xl,
-.col-xl-auto {
-  position: relative;
-  width: 100%;
-  min-height: 1px;
-  padding-right: 15px;
-  padding-left: 15px; }
-
-.col {
-  flex-basis: 0;
-  flex-grow: 1;
-  max-width: 100%; }
-
-.col-auto {
-  flex: 0 0 auto;
-  width: auto;
-  max-width: none; }
-
-.col-1 {
-  flex: 0 0 8.33333%;
-  max-width: 8.33333%; }
-
-.col-2 {
-  flex: 0 0 16.66667%;
-  max-width: 16.66667%; }
-
-.col-3 {
-  flex: 0 0 25%;
-  max-width: 25%; }
-
-.col-4 {
-  flex: 0 0 33.33333%;
-  max-width: 33.33333%; }
-
-.col-5 {
-  flex: 0 0 41.66667%;
-  max-width: 41.66667%; }
-
-.col-6 {
-  flex: 0 0 50%;
-  max-width: 50%; }
-
-.col-7 {
-  flex: 0 0 58.33333%;
-  max-width: 58.33333%; }
-
-.col-8 {
-  flex: 0 0 66.66667%;
-  max-width: 66.66667%; }
-
-.col-9 {
-  flex: 0 0 75%;
-  max-width: 75%; }
-
-.col-10 {
-  flex: 0 0 83.33333%;
-  max-width: 83.33333%; }
-
-.col-11 {
-  flex: 0 0 91.66667%;
-  max-width: 91.66667%; }
-
-.col-12 {
-  flex: 0 0 100%;
-  max-width: 100%; }
-
-.order-first {
-  order: -1; }
-
-.order-last {
-  order: 13; }
-
-.order-0 {
-  order: 0; }
-
-.order-1 {
-  order: 1; }
-
-.order-2 {
-  order: 2; }
-
-.order-3 {
-  order: 3; }
-
-.order-4 {
-  order: 4; }
-
-.order-5 {
-  order: 5; }
-
-.order-6 {
-  order: 6; }
-
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\ No newline at end of file
diff --git a/assets/js/bootstrap.js b/assets/js/bootstrap.js
deleted file mode 100644
index 0e846b780d..0000000000
--- a/assets/js/bootstrap.js
+++ /dev/null
@@ -1,7 +0,0 @@
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s=mt(e).find(kt)[0];mt(s).trigger("focus")}mt(this).trigger("click")}}},o(l,null,[{key:"VERSION",get:function(){return"4.1.1"}},{key:"Default",get:function(){return Ft}},{key:"DefaultType",get:function(){return Vt}}]),l}(),mt(document).on(It.KEYDOWN_DATA_API,kt,Qt._dataApiKeydownHandler).on(It.KEYDOWN_DATA_API,Lt,Qt._dataApiKeydownHandler).on(It.CLICK_DATA_API+" "+It.KEYUP_DATA_API,Qt._clearMenus).on(It.CLICK_DATA_API,kt,function(t){t.preventDefault(),t.stopPropagation(),Qt._jQueryInterface.call(mt(this),"toggle")}).on(It.CLICK_DATA_API,Pt,function(t){t.stopPropagation()}),mt.fn[pt]=Qt._jQueryInterface,mt.fn[pt].Constructor=Qt,mt.fn[pt].noConflict=function(){return mt.fn[pt]=Tt,Qt._jQueryInterface},Qt),wn=(Yt="modal",qt="."+(Gt="bs.modal"),zt=(Bt=e).fn[Yt],Xt={backdrop:!0,keyboard:!0,focus:!0,show:!0},Jt={backdrop:"(boolean|string)",keyboard:"boolean",focus:"boolean",show:"boolean"},Zt={HIDE:"hide"+qt,HIDDEN:"hidden"+qt,SHOW:"show"+qt,SHOWN:"shown"+qt,FOCUSIN:"focusin"+qt,RESIZE:"resize"+qt,CLICK_DISMISS:"click.dismiss"+qt,KEYDOWN_DISMISS:"keydown.dismiss"+qt,MOUSEUP_DISMISS:"mouseup.dismiss"+qt,MOUSEDOWN_DISMISS:"mousedown.dismiss"+qt,CLICK_DATA_API:"click"+qt+".data-api"},$t="modal-scrollbar-measure",te="modal-backdrop",ee="modal-open",ne="fade",ie="show",re={DIALOG:".modal-dialog",DATA_TOGGLE:'[data-toggle="modal"]',DATA_DISMISS:'[data-dismiss="modal"]',FIXED_CONTENT:".fixed-top, .fixed-bottom, .is-fixed, .sticky-top",STICKY_CONTENT:".sticky-top",NAVBAR_TOGGLER:".navbar-toggler"},se=function(){function r(t,e){this._config=this._getConfig(e),this._element=t,this._dialog=Bt(t).find(re.DIALOG)[0],this._backdrop=null,this._isShown=!1,this._isBodyOverflowing=!1,this._ignoreBackdropClick=!1,this._scrollbarWidth=0}var t=r.prototype;return t.toggle=function(t){return this._isShown?this.hide():this.show(t)},t.show=function(t){var e=this;if(!this._isTransitioning&&!this._isShown){Bt(this._element).hasClass(ne)&&(this._isTransitioning=!0);var n=Bt.Event(Zt.SHOW,{relatedTarget:t});Bt(this._element).trigger(n),this._isShown||n.isDefaultPrevented()||(this._isShown=!0,this._checkScrollbar(),this._setScrollbar(),this._adjustDialog(),Bt(document.body).addClass(ee),this._setEscapeEvent(),this._setResizeEvent(),Bt(this._element).on(Zt.CLICK_DISMISS,re.DATA_DISMISS,function(t){return e.hide(t)}),Bt(this._dialog).on(Zt.MOUSEDOWN_DISMISS,function(){Bt(e._element).one(Zt.MOUSEUP_DISMISS,function(t){Bt(t.target).is(e._element)&&(e._ignoreBackdropClick=!0)})}),this._showBackdrop(function(){return e._showElement(t)}))}},t.hide=function(t){var e=this;if(t&&t.preventDefault(),!this._isTransitioning&&this._isShown){var n=Bt.Event(Zt.HIDE);if(Bt(this._element).trigger(n),this._isShown&&!n.isDefaultPrevented()){this._isShown=!1;var i=Bt(this._element).hasClass(ne);if(i&&(this._isTransitioning=!0),this._setEscapeEvent(),this._setResizeEvent(),Bt(document).off(Zt.FOCUSIN),Bt(this._element).removeClass(ie),Bt(this._element).off(Zt.CLICK_DISMISS),Bt(this._dialog).off(Zt.MOUSEDOWN_DISMISS),i){var r=Cn.getTransitionDurationFromElement(this._element);Bt(this._element).one(Cn.TRANSITION_END,function(t){return e._hideModal(t)}).emulateTransitionEnd(r)}else this._hideModal()}}},t.dispose=function(){Bt.removeData(this._element,Gt),Bt(window,document,this._element,this._backdrop).off(qt),this._config=null,this._element=null,this._dialog=null,this._backdrop=null,this._isShown=null,this._isBodyOverflowing=null,this._ignoreBackdropClick=null,this._scrollbarWidth=null},t.handleUpdate=function(){this._adjustDialog()},t._getConfig=function(t){return t=h({},Xt,t),Cn.typeCheckConfig(Yt,t,Jt),t},t._showElement=function(t){var e=this,n=Bt(this._element).hasClass(ne);this._element.parentNode&&this._element.parentNode.nodeType===Node.ELEMENT_NODE||document.body.appendChild(this._element),this._element.style.display="block",this._element.removeAttribute("aria-hidden"),this._element.scrollTop=0,n&&Cn.reflow(this._element),Bt(this._element).addClass(ie),this._config.focus&&this._enforceFocus();var i=Bt.Event(Zt.SHOWN,{relatedTarget:t}),r=function(){e._config.focus&&e._element.focus(),e._isTransitioning=!1,Bt(e._element).trigger(i)};if(n){var 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t=this;this._element.style.display="none",this._element.setAttribute("aria-hidden",!0),this._isTransitioning=!1,this._showBackdrop(function(){Bt(document.body).removeClass(ee),t._resetAdjustments(),t._resetScrollbar(),Bt(t._element).trigger(Zt.HIDDEN)})},t._removeBackdrop=function(){this._backdrop&&(Bt(this._backdrop).remove(),this._backdrop=null)},t._showBackdrop=function(t){var e=this,n=Bt(this._element).hasClass(ne)?ne:"";if(this._isShown&&this._config.backdrop){if(this._backdrop=document.createElement("div"),this._backdrop.className=te,n&&Bt(this._backdrop).addClass(n),Bt(this._backdrop).appendTo(document.body),Bt(this._element).on(Zt.CLICK_DISMISS,function(t){e._ignoreBackdropClick?e._ignoreBackdropClick=!1:t.target===t.currentTarget&&("static"===e._config.backdrop?e._element.focus():e.hide())}),n&&Cn.reflow(this._backdrop),Bt(this._backdrop).addClass(ie),!t)return;if(!n)return void t();var 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t=document.body.getBoundingClientRect();this._isBodyOverflowing=t.left+t.right<window.innerWidth,this._scrollbarWidth=this._getScrollbarWidth()},t._setScrollbar=function(){var r=this;if(this._isBodyOverflowing){Bt(re.FIXED_CONTENT).each(function(t,e){var n=Bt(e)[0].style.paddingRight,i=Bt(e).css("padding-right");Bt(e).data("padding-right",n).css("padding-right",parseFloat(i)+r._scrollbarWidth+"px")}),Bt(re.STICKY_CONTENT).each(function(t,e){var n=Bt(e)[0].style.marginRight,i=Bt(e).css("margin-right");Bt(e).data("margin-right",n).css("margin-right",parseFloat(i)-r._scrollbarWidth+"px")}),Bt(re.NAVBAR_TOGGLER).each(function(t,e){var n=Bt(e)[0].style.marginRight,i=Bt(e).css("margin-right");Bt(e).data("margin-right",n).css("margin-right",parseFloat(i)+r._scrollbarWidth+"px")});var t=document.body.style.paddingRight,e=Bt(document.body).css("padding-right");Bt(document.body).data("padding-right",t).css("padding-right",parseFloat(e)+this._scrollbarWidth+"px")}},t._resetScrollbar=function(){Bt(re.FIXED_CONTENT).each(function(t,e){var n=Bt(e).data("padding-right");"undefined"!=typeof n&&Bt(e).css("padding-right",n).removeData("padding-right")}),Bt(re.STICKY_CONTENT+", "+re.NAVBAR_TOGGLER).each(function(t,e){var n=Bt(e).data("margin-right");"undefined"!=typeof n&&Bt(e).css("margin-right",n).removeData("margin-right")});var t=Bt(document.body).data("padding-right");"undefined"!=typeof t&&Bt(document.body).css("padding-right",t).removeData("padding-right")},t._getScrollbarWidth=function(){var t=document.createElement("div");t.className=$t,document.body.appendChild(t);var e=t.getBoundingClientRect().width-t.clientWidth;return document.body.removeChild(t),e},r._jQueryInterface=function(n,i){return this.each(function(){var 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diff --git a/assets/js/lunr.js b/assets/js/lunr.js
deleted file mode 100644
index f208eba5a7..0000000000
--- a/assets/js/lunr.js
+++ /dev/null
@@ -1,2977 +0,0 @@
-/**
- * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 2.1.5
- * Copyright (C) 2017 Oliver Nightingale
- * @license MIT
- */
-
-;(function(){
-
-/**
- * A convenience function for configuring and constructing
- * a new lunr Index.
- *
- * A lunr.Builder instance is created and the pipeline setup
- * with a trimmer, stop word filter and stemmer.
- *
- * This builder object is yielded to the configuration function
- * that is passed as a parameter, allowing the list of fields
- * and other builder parameters to be customised.
- *
- * All documents _must_ be added within the passed config function.
- *
- * @example
- * var idx = lunr(function () {
- *   this.field('title')
- *   this.field('body')
- *   this.ref('id')
- *
- *   documents.forEach(function (doc) {
- *     this.add(doc)
- *   }, this)
- * })
- *
- * @see {@link lunr.Builder}
- * @see {@link lunr.Pipeline}
- * @see {@link lunr.trimmer}
- * @see {@link lunr.stopWordFilter}
- * @see {@link lunr.stemmer}
- * @namespace {function} lunr
- */
-var lunr = function (config) {
-  var builder = new lunr.Builder
-
-  builder.pipeline.add(
-    lunr.trimmer,
-    lunr.stopWordFilter,
-    lunr.stemmer
-  )
-
-  builder.searchPipeline.add(
-    lunr.stemmer
-  )
-
-  config.call(builder, builder)
-  return builder.build()
-}
-
-lunr.version = "2.1.5"
-/*!
- * lunr.utils
- * Copyright (C) 2017 Oliver Nightingale
- */
-
-/**
- * A namespace containing utils for the rest of the lunr library
- */
-lunr.utils = {}
-
-/**
- * Print a warning message to the console.
- *
- * @param {String} message The message to be printed.
- * @memberOf Utils
- */
-lunr.utils.warn = (function (global) {
-  /* eslint-disable no-console */
-  return function (message) {
-    if (global.console && console.warn) {
-      console.warn(message)
-    }
-  }
-  /* eslint-enable no-console */
-})(this)
-
-/**
- * Convert an object to a string.
- *
- * In the case of `null` and `undefined` the function returns
- * the empty string, in all other cases the result of calling
- * `toString` on the passed object is returned.
- *
- * @param {Any} obj The object to convert to a string.
- * @return {String} string representation of the passed object.
- * @memberOf Utils
- */
-lunr.utils.asString = function (obj) {
-  if (obj === void 0 || obj === null) {
-    return ""
-  } else {
-    return obj.toString()
-  }
-}
-lunr.FieldRef = function (docRef, fieldName, stringValue) {
-  this.docRef = docRef
-  this.fieldName = fieldName
-  this._stringValue = stringValue
-}
-
-lunr.FieldRef.joiner = "/"
-
-lunr.FieldRef.fromString = function (s) {
-  var n = s.indexOf(lunr.FieldRef.joiner)
-
-  if (n === -1) {
-    throw "malformed field ref string"
-  }
-
-  var fieldRef = s.slice(0, n),
-      docRef = s.slice(n + 1)
-
-  return new lunr.FieldRef (docRef, fieldRef, s)
-}
-
-lunr.FieldRef.prototype.toString = function () {
-  if (this._stringValue == undefined) {
-    this._stringValue = this.fieldName + lunr.FieldRef.joiner + this.docRef
-  }
-
-  return this._stringValue
-}
-/**
- * A function to calculate the inverse document frequency for
- * a posting. This is shared between the builder and the index
- *
- * @private
- * @param {object} posting - The posting for a given term
- * @param {number} documentCount - The total number of documents.
- */
-lunr.idf = function (posting, documentCount) {
-  var documentsWithTerm = 0
-
-  for (var fieldName in posting) {
-    if (fieldName == '_index') continue // Ignore the term index, its not a field
-    documentsWithTerm += Object.keys(posting[fieldName]).length
-  }
-
-  var x = (documentCount - documentsWithTerm + 0.5) / (documentsWithTerm + 0.5)
-
-  return Math.log(1 + Math.abs(x))
-}
-
-/**
- * A token wraps a string representation of a token
- * as it is passed through the text processing pipeline.
- *
- * @constructor
- * @param {string} [str=''] - The string token being wrapped.
- * @param {object} [metadata={}] - Metadata associated with this token.
- */
-lunr.Token = function (str, metadata) {
-  this.str = str || ""
-  this.metadata = metadata || {}
-}
-
-/**
- * Returns the token string that is being wrapped by this object.
- *
- * @returns {string}
- */
-lunr.Token.prototype.toString = function () {
-  return this.str
-}
-
-/**
- * A token update function is used when updating or optionally
- * when cloning a token.
- *
- * @callback lunr.Token~updateFunction
- * @param {string} str - The string representation of the token.
- * @param {Object} metadata - All metadata associated with this token.
- */
-
-/**
- * Applies the given function to the wrapped string token.
- *
- * @example
- * token.update(function (str, metadata) {
- *   return str.toUpperCase()
- * })
- *
- * @param {lunr.Token~updateFunction} fn - A function to apply to the token string.
- * @returns {lunr.Token}
- */
-lunr.Token.prototype.update = function (fn) {
-  this.str = fn(this.str, this.metadata)
-  return this
-}
-
-/**
- * Creates a clone of this token. Optionally a function can be
- * applied to the cloned token.
- *
- * @param {lunr.Token~updateFunction} [fn] - An optional function to apply to the cloned token.
- * @returns {lunr.Token}
- */
-lunr.Token.prototype.clone = function (fn) {
-  fn = fn || function (s) { return s }
-  return new lunr.Token (fn(this.str, this.metadata), this.metadata)
-}
-/*!
- * lunr.tokenizer
- * Copyright (C) 2017 Oliver Nightingale
- */
-
-/**
- * A function for splitting a string into tokens ready to be inserted into
- * the search index. Uses `lunr.tokenizer.separator` to split strings, change
- * the value of this property to change how strings are split into tokens.
- *
- * This tokenizer will convert its parameter to a string by calling `toString` and
- * then will split this string on the character in `lunr.tokenizer.separator`.
- * Arrays will have their elements converted to strings and wrapped in a lunr.Token.
- *
- * @static
- * @param {?(string|object|object[])} obj - The object to convert into tokens
- * @returns {lunr.Token[]}
- */
-lunr.tokenizer = function (obj) {
-  if (obj == null || obj == undefined) {
-    return []
-  }
-
-  if (Array.isArray(obj)) {
-    return obj.map(function (t) {
-      return new lunr.Token(lunr.utils.asString(t).toLowerCase())
-    })
-  }
-
-  var str = obj.toString().trim().toLowerCase(),
-      len = str.length,
-      tokens = []
-
-  for (var sliceEnd = 0, sliceStart = 0; sliceEnd <= len; sliceEnd++) {
-    var char = str.charAt(sliceEnd),
-        sliceLength = sliceEnd - sliceStart
-
-    if ((char.match(lunr.tokenizer.separator) || sliceEnd == len)) {
-
-      if (sliceLength > 0) {
-        tokens.push(
-          new lunr.Token (str.slice(sliceStart, sliceEnd), {
-            position: [sliceStart, sliceLength],
-            index: tokens.length
-          })
-        )
-      }
-
-      sliceStart = sliceEnd + 1
-    }
-
-  }
-
-  return tokens
-}
-
-/**
- * The separator used to split a string into tokens. Override this property to change the behaviour of
- * `lunr.tokenizer` behaviour when tokenizing strings. By default this splits on whitespace and hyphens.
- *
- * @static
- * @see lunr.tokenizer
- */
-lunr.tokenizer.separator = /[\s\-]+/
-/*!
- * lunr.Pipeline
- * Copyright (C) 2017 Oliver Nightingale
- */
-
-/**
- * lunr.Pipelines maintain an ordered list of functions to be applied to all
- * tokens in documents entering the search index and queries being ran against
- * the index.
- *
- * An instance of lunr.Index created with the lunr shortcut will contain a
- * pipeline with a stop word filter and an English language stemmer. Extra
- * functions can be added before or after either of these functions or these
- * default functions can be removed.
- *
- * When run the pipeline will call each function in turn, passing a token, the
- * index of that token in the original list of all tokens and finally a list of
- * all the original tokens.
- *
- * The output of functions in the pipeline will be passed to the next function
- * in the pipeline. To exclude a token from entering the index the function
- * should return undefined, the rest of the pipeline will not be called with
- * this token.
- *
- * For serialisation of pipelines to work, all functions used in an instance of
- * a pipeline should be registered with lunr.Pipeline. Registered functions can
- * then be loaded. If trying to load a serialised pipeline that uses functions
- * that are not registered an error will be thrown.
- *
- * If not planning on serialising the pipeline then registering pipeline functions
- * is not necessary.
- *
- * @constructor
- */
-lunr.Pipeline = function () {
-  this._stack = []
-}
-
-lunr.Pipeline.registeredFunctions = Object.create(null)
-
-/**
- * A pipeline function maps lunr.Token to lunr.Token. A lunr.Token contains the token
- * string as well as all known metadata. A pipeline function can mutate the token string
- * or mutate (or add) metadata for a given token.
- *
- * A pipeline function can indicate that the passed token should be discarded by returning
- * null. This token will not be passed to any downstream pipeline functions and will not be
- * added to the index.
- *
- * Multiple tokens can be returned by returning an array of tokens. Each token will be passed
- * to any downstream pipeline functions and all will returned tokens will be added to the index.
- *
- * Any number of pipeline functions may be chained together using a lunr.Pipeline.
- *
- * @interface lunr.PipelineFunction
- * @param {lunr.Token} token - A token from the document being processed.
- * @param {number} i - The index of this token in the complete list of tokens for this document/field.
- * @param {lunr.Token[]} tokens - All tokens for this document/field.
- * @returns {(?lunr.Token|lunr.Token[])}
- */
-
-/**
- * Register a function with the pipeline.
- *
- * Functions that are used in the pipeline should be registered if the pipeline
- * needs to be serialised, or a serialised pipeline needs to be loaded.
- *
- * Registering a function does not add it to a pipeline, functions must still be
- * added to instances of the pipeline for them to be used when running a pipeline.
- *
- * @param {lunr.PipelineFunction} fn - The function to check for.
- * @param {String} label - The label to register this function with
- */
-lunr.Pipeline.registerFunction = function (fn, label) {
-  if (label in this.registeredFunctions) {
-    lunr.utils.warn('Overwriting existing registered function: ' + label)
-  }
-
-  fn.label = label
-  lunr.Pipeline.registeredFunctions[fn.label] = fn
-}
-
-/**
- * Warns if the function is not registered as a Pipeline function.
- *
- * @param {lunr.PipelineFunction} fn - The function to check for.
- * @private
- */
-lunr.Pipeline.warnIfFunctionNotRegistered = function (fn) {
-  var isRegistered = fn.label && (fn.label in this.registeredFunctions)
-
-  if (!isRegistered) {
-    lunr.utils.warn('Function is not registered with pipeline. This may cause problems when serialising the index.\n', fn)
-  }
-}
-
-/**
- * Loads a previously serialised pipeline.
- *
- * All functions to be loaded must already be registered with lunr.Pipeline.
- * If any function from the serialised data has not been registered then an
- * error will be thrown.
- *
- * @param {Object} serialised - The serialised pipeline to load.
- * @returns {lunr.Pipeline}
- */
-lunr.Pipeline.load = function (serialised) {
-  var pipeline = new lunr.Pipeline
-
-  serialised.forEach(function (fnName) {
-    var fn = lunr.Pipeline.registeredFunctions[fnName]
-
-    if (fn) {
-      pipeline.add(fn)
-    } else {
-      throw new Error('Cannot load unregistered function: ' + fnName)
-    }
-  })
-
-  return pipeline
-}
-
-/**
- * Adds new functions to the end of the pipeline.
- *
- * Logs a warning if the function has not been registered.
- *
- * @param {lunr.PipelineFunction[]} functions - Any number of functions to add to the pipeline.
- */
-lunr.Pipeline.prototype.add = function () {
-  var fns = Array.prototype.slice.call(arguments)
-
-  fns.forEach(function (fn) {
-    lunr.Pipeline.warnIfFunctionNotRegistered(fn)
-    this._stack.push(fn)
-  }, this)
-}
-
-/**
- * Adds a single function after a function that already exists in the
- * pipeline.
- *
- * Logs a warning if the function has not been registered.
- *
- * @param {lunr.PipelineFunction} existingFn - A function that already exists in the pipeline.
- * @param {lunr.PipelineFunction} newFn - The new function to add to the pipeline.
- */
-lunr.Pipeline.prototype.after = function (existingFn, newFn) {
-  lunr.Pipeline.warnIfFunctionNotRegistered(newFn)
-
-  var pos = this._stack.indexOf(existingFn)
-  if (pos == -1) {
-    throw new Error('Cannot find existingFn')
-  }
-
-  pos = pos + 1
-  this._stack.splice(pos, 0, newFn)
-}
-
-/**
- * Adds a single function before a function that already exists in the
- * pipeline.
- *
- * Logs a warning if the function has not been registered.
- *
- * @param {lunr.PipelineFunction} existingFn - A function that already exists in the pipeline.
- * @param {lunr.PipelineFunction} newFn - The new function to add to the pipeline.
- */
-lunr.Pipeline.prototype.before = function (existingFn, newFn) {
-  lunr.Pipeline.warnIfFunctionNotRegistered(newFn)
-
-  var pos = this._stack.indexOf(existingFn)
-  if (pos == -1) {
-    throw new Error('Cannot find existingFn')
-  }
-
-  this._stack.splice(pos, 0, newFn)
-}
-
-/**
- * Removes a function from the pipeline.
- *
- * @param {lunr.PipelineFunction} fn The function to remove from the pipeline.
- */
-lunr.Pipeline.prototype.remove = function (fn) {
-  var pos = this._stack.indexOf(fn)
-  if (pos == -1) {
-    return
-  }
-
-  this._stack.splice(pos, 1)
-}
-
-/**
- * Runs the current list of functions that make up the pipeline against the
- * passed tokens.
- *
- * @param {Array} tokens The tokens to run through the pipeline.
- * @returns {Array}
- */
-lunr.Pipeline.prototype.run = function (tokens) {
-  var stackLength = this._stack.length
-
-  for (var i = 0; i < stackLength; i++) {
-    var fn = this._stack[i]
-
-    tokens = tokens.reduce(function (memo, token, j) {
-      var result = fn(token, j, tokens)
-
-      if (result === void 0 || result === '') return memo
-
-      return memo.concat(result)
-    }, [])
-  }
-
-  return tokens
-}
-
-/**
- * Convenience method for passing a string through a pipeline and getting
- * strings out. This method takes care of wrapping the passed string in a
- * token and mapping the resulting tokens back to strings.
- *
- * @param {string} str - The string to pass through the pipeline.
- * @returns {string[]}
- */
-lunr.Pipeline.prototype.runString = function (str) {
-  var token = new lunr.Token (str)
-
-  return this.run([token]).map(function (t) {
-    return t.toString()
-  })
-}
-
-/**
- * Resets the pipeline by removing any existing processors.
- *
- */
-lunr.Pipeline.prototype.reset = function () {
-  this._stack = []
-}
-
-/**
- * Returns a representation of the pipeline ready for serialisation.
- *
- * Logs a warning if the function has not been registered.
- *
- * @returns {Array}
- */
-lunr.Pipeline.prototype.toJSON = function () {
-  return this._stack.map(function (fn) {
-    lunr.Pipeline.warnIfFunctionNotRegistered(fn)
-
-    return fn.label
-  })
-}
-/*!
- * lunr.Vector
- * Copyright (C) 2017 Oliver Nightingale
- */
-
-/**
- * A vector is used to construct the vector space of documents and queries. These
- * vectors support operations to determine the similarity between two documents or
- * a document and a query.
- *
- * Normally no parameters are required for initializing a vector, but in the case of
- * loading a previously dumped vector the raw elements can be provided to the constructor.
- *
- * For performance reasons vectors are implemented with a flat array, where an elements
- * index is immediately followed by its value. E.g. [index, value, index, value]. This
- * allows the underlying array to be as sparse as possible and still offer decent
- * performance when being used for vector calculations.
- *
- * @constructor
- * @param {Number[]} [elements] - The flat list of element index and element value pairs.
- */
-lunr.Vector = function (elements) {
-  this._magnitude = 0
-  this.elements = elements || []
-}
-
-
-/**
- * Calculates the position within the vector to insert a given index.
- *
- * This is used internally by insert and upsert. If there are duplicate indexes then
- * the position is returned as if the value for that index were to be updated, but it
- * is the callers responsibility to check whether there is a duplicate at that index
- *
- * @param {Number} insertIdx - The index at which the element should be inserted.
- * @returns {Number}
- */
-lunr.Vector.prototype.positionForIndex = function (index) {
-  // For an empty vector the tuple can be inserted at the beginning
-  if (this.elements.length == 0) {
-    return 0
-  }
-
-  var start = 0,
-      end = this.elements.length / 2,
-      sliceLength = end - start,
-      pivotPoint = Math.floor(sliceLength / 2),
-      pivotIndex = this.elements[pivotPoint * 2]
-
-  while (sliceLength > 1) {
-    if (pivotIndex < index) {
-      start = pivotPoint
-    }
-
-    if (pivotIndex > index) {
-      end = pivotPoint
-    }
-
-    if (pivotIndex == index) {
-      break
-    }
-
-    sliceLength = end - start
-    pivotPoint = start + Math.floor(sliceLength / 2)
-    pivotIndex = this.elements[pivotPoint * 2]
-  }
-
-  if (pivotIndex == index) {
-    return pivotPoint * 2
-  }
-
-  if (pivotIndex > index) {
-    return pivotPoint * 2
-  }
-
-  if (pivotIndex < index) {
-    return (pivotPoint + 1) * 2
-  }
-}
-
-/**
- * Inserts an element at an index within the vector.
- *
- * Does not allow duplicates, will throw an error if there is already an entry
- * for this index.
- *
- * @param {Number} insertIdx - The index at which the element should be inserted.
- * @param {Number} val - The value to be inserted into the vector.
- */
-lunr.Vector.prototype.insert = function (insertIdx, val) {
-  this.upsert(insertIdx, val, function () {
-    throw "duplicate index"
-  })
-}
-
-/**
- * Inserts or updates an existing index within the vector.
- *
- * @param {Number} insertIdx - The index at which the element should be inserted.
- * @param {Number} val - The value to be inserted into the vector.
- * @param {function} fn - A function that is called for updates, the existing value and the
- * requested value are passed as arguments
- */
-lunr.Vector.prototype.upsert = function (insertIdx, val, fn) {
-  this._magnitude = 0
-  var position = this.positionForIndex(insertIdx)
-
-  if (this.elements[position] == insertIdx) {
-    this.elements[position + 1] = fn(this.elements[position + 1], val)
-  } else {
-    this.elements.splice(position, 0, insertIdx, val)
-  }
-}
-
-/**
- * Calculates the magnitude of this vector.
- *
- * @returns {Number}
- */
-lunr.Vector.prototype.magnitude = function () {
-  if (this._magnitude) return this._magnitude
-
-  var sumOfSquares = 0,
-      elementsLength = this.elements.length
-
-  for (var i = 1; i < elementsLength; i += 2) {
-    var val = this.elements[i]
-    sumOfSquares += val * val
-  }
-
-  return this._magnitude = Math.sqrt(sumOfSquares)
-}
-
-/**
- * Calculates the dot product of this vector and another vector.
- *
- * @param {lunr.Vector} otherVector - The vector to compute the dot product with.
- * @returns {Number}
- */
-lunr.Vector.prototype.dot = function (otherVector) {
-  var dotProduct = 0,
-      a = this.elements, b = otherVector.elements,
-      aLen = a.length, bLen = b.length,
-      aVal = 0, bVal = 0,
-      i = 0, j = 0
-
-  while (i < aLen && j < bLen) {
-    aVal = a[i], bVal = b[j]
-    if (aVal < bVal) {
-      i += 2
-    } else if (aVal > bVal) {
-      j += 2
-    } else if (aVal == bVal) {
-      dotProduct += a[i + 1] * b[j + 1]
-      i += 2
-      j += 2
-    }
-  }
-
-  return dotProduct
-}
-
-/**
- * Calculates the cosine similarity between this vector and another
- * vector.
- *
- * @param {lunr.Vector} otherVector - The other vector to calculate the
- * similarity with.
- * @returns {Number}
- */
-lunr.Vector.prototype.similarity = function (otherVector) {
-  return this.dot(otherVector) / (this.magnitude() * otherVector.magnitude())
-}
-
-/**
- * Converts the vector to an array of the elements within the vector.
- *
- * @returns {Number[]}
- */
-lunr.Vector.prototype.toArray = function () {
-  var output = new Array (this.elements.length / 2)
-
-  for (var i = 1, j = 0; i < this.elements.length; i += 2, j++) {
-    output[j] = this.elements[i]
-  }
-
-  return output
-}
-
-/**
- * A JSON serializable representation of the vector.
- *
- * @returns {Number[]}
- */
-lunr.Vector.prototype.toJSON = function () {
-  return this.elements
-}
-/* eslint-disable */
-/*!
- * lunr.stemmer
- * Copyright (C) 2017 Oliver Nightingale
- * Includes code from - http://tartarus.org/~martin/PorterStemmer/js.txt
- */
-
-/**
- * lunr.stemmer is an english language stemmer, this is a JavaScript
- * implementation of the PorterStemmer taken from http://tartarus.org/~martin
- *
- * @static
- * @implements {lunr.PipelineFunction}
- * @param {lunr.Token} token - The string to stem
- * @returns {lunr.Token}
- * @see {@link lunr.Pipeline}
- */
-lunr.stemmer = (function(){
-  var step2list = {
-      "ational" : "ate",
-      "tional" : "tion",
-      "enci" : "ence",
-      "anci" : "ance",
-      "izer" : "ize",
-      "bli" : "ble",
-      "alli" : "al",
-      "entli" : "ent",
-      "eli" : "e",
-      "ousli" : "ous",
-      "ization" : "ize",
-      "ation" : "ate",
-      "ator" : "ate",
-      "alism" : "al",
-      "iveness" : "ive",
-      "fulness" : "ful",
-      "ousness" : "ous",
-      "aliti" : "al",
-      "iviti" : "ive",
-      "biliti" : "ble",
-      "logi" : "log"
-    },
-
-    step3list = {
-      "icate" : "ic",
-      "ative" : "",
-      "alize" : "al",
-      "iciti" : "ic",
-      "ical" : "ic",
-      "ful" : "",
-      "ness" : ""
-    },
-
-    c = "[^aeiou]",          // consonant
-    v = "[aeiouy]",          // vowel
-    C = c + "[^aeiouy]*",    // consonant sequence
-    V = v + "[aeiou]*",      // vowel sequence
-
-    mgr0 = "^(" + C + ")?" + V + C,               // [C]VC... is m>0
-    meq1 = "^(" + C + ")?" + V + C + "(" + V + ")?$",  // [C]VC[V] is m=1
-    mgr1 = "^(" + C + ")?" + V + C + V + C,       // [C]VCVC... is m>1
-    s_v = "^(" + C + ")?" + v;                   // vowel in stem
-
-  var re_mgr0 = new RegExp(mgr0);
-  var re_mgr1 = new RegExp(mgr1);
-  var re_meq1 = new RegExp(meq1);
-  var re_s_v = new RegExp(s_v);
-
-  var re_1a = /^(.+?)(ss|i)es$/;
-  var re2_1a = /^(.+?)([^s])s$/;
-  var re_1b = /^(.+?)eed$/;
-  var re2_1b = /^(.+?)(ed|ing)$/;
-  var re_1b_2 = /.$/;
-  var re2_1b_2 = /(at|bl|iz)$/;
-  var re3_1b_2 = new RegExp("([^aeiouylsz])\\1$");
-  var re4_1b_2 = new RegExp("^" + C + v + "[^aeiouwxy]$");
-
-  var re_1c = /^(.+?[^aeiou])y$/;
-  var re_2 = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/;
-
-  var re_3 = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;
-
-  var re_4 = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/;
-  var re2_4 = /^(.+?)(s|t)(ion)$/;
-
-  var re_5 = /^(.+?)e$/;
-  var re_5_1 = /ll$/;
-  var re3_5 = new RegExp("^" + C + v + "[^aeiouwxy]$");
-
-  var porterStemmer = function porterStemmer(w) {
-    var stem,
-      suffix,
-      firstch,
-      re,
-      re2,
-      re3,
-      re4;
-
-    if (w.length < 3) { return w; }
-
-    firstch = w.substr(0,1);
-    if (firstch == "y") {
-      w = firstch.toUpperCase() + w.substr(1);
-    }
-
-    // Step 1a
-    re = re_1a
-    re2 = re2_1a;
-
-    if (re.test(w)) { w = w.replace(re,"$1$2"); }
-    else if (re2.test(w)) { w = w.replace(re2,"$1$2"); }
-
-    // Step 1b
-    re = re_1b;
-    re2 = re2_1b;
-    if (re.test(w)) {
-      var fp = re.exec(w);
-      re = re_mgr0;
-      if (re.test(fp[1])) {
-        re = re_1b_2;
-        w = w.replace(re,"");
-      }
-    } else if (re2.test(w)) {
-      var fp = re2.exec(w);
-      stem = fp[1];
-      re2 = re_s_v;
-      if (re2.test(stem)) {
-        w = stem;
-        re2 = re2_1b_2;
-        re3 = re3_1b_2;
-        re4 = re4_1b_2;
-        if (re2.test(w)) { w = w + "e"; }
-        else if (re3.test(w)) { re = re_1b_2; w = w.replace(re,""); }
-        else if (re4.test(w)) { w = w + "e"; }
-      }
-    }
-
-    // Step 1c - replace suffix y or Y by i if preceded by a non-vowel which is not the first letter of the word (so cry -> cri, by -> by, say -> say)
-    re = re_1c;
-    if (re.test(w)) {
-      var fp = re.exec(w);
-      stem = fp[1];
-      w = stem + "i";
-    }
-
-    // Step 2
-    re = re_2;
-    if (re.test(w)) {
-      var fp = re.exec(w);
-      stem = fp[1];
-      suffix = fp[2];
-      re = re_mgr0;
-      if (re.test(stem)) {
-        w = stem + step2list[suffix];
-      }
-    }
-
-    // Step 3
-    re = re_3;
-    if (re.test(w)) {
-      var fp = re.exec(w);
-      stem = fp[1];
-      suffix = fp[2];
-      re = re_mgr0;
-      if (re.test(stem)) {
-        w = stem + step3list[suffix];
-      }
-    }
-
-    // Step 4
-    re = re_4;
-    re2 = re2_4;
-    if (re.test(w)) {
-      var fp = re.exec(w);
-      stem = fp[1];
-      re = re_mgr1;
-      if (re.test(stem)) {
-        w = stem;
-      }
-    } else if (re2.test(w)) {
-      var fp = re2.exec(w);
-      stem = fp[1] + fp[2];
-      re2 = re_mgr1;
-      if (re2.test(stem)) {
-        w = stem;
-      }
-    }
-
-    // Step 5
-    re = re_5;
-    if (re.test(w)) {
-      var fp = re.exec(w);
-      stem = fp[1];
-      re = re_mgr1;
-      re2 = re_meq1;
-      re3 = re3_5;
-      if (re.test(stem) || (re2.test(stem) && !(re3.test(stem)))) {
-        w = stem;
-      }
-    }
-
-    re = re_5_1;
-    re2 = re_mgr1;
-    if (re.test(w) && re2.test(w)) {
-      re = re_1b_2;
-      w = w.replace(re,"");
-    }
-
-    // and turn initial Y back to y
-
-    if (firstch == "y") {
-      w = firstch.toLowerCase() + w.substr(1);
-    }
-
-    return w;
-  };
-
-  return function (token) {
-    return token.update(porterStemmer);
-  }
-})();
-
-lunr.Pipeline.registerFunction(lunr.stemmer, 'stemmer')
-/*!
- * lunr.stopWordFilter
- * Copyright (C) 2017 Oliver Nightingale
- */
-
-/**
- * lunr.generateStopWordFilter builds a stopWordFilter function from the provided
- * list of stop words.
- *
- * The built in lunr.stopWordFilter is built using this generator and can be used
- * to generate custom stopWordFilters for applications or non English languages.
- *
- * @param {Array} token The token to pass through the filter
- * @returns {lunr.PipelineFunction}
- * @see lunr.Pipeline
- * @see lunr.stopWordFilter
- */
-lunr.generateStopWordFilter = function (stopWords) {
-  var words = stopWords.reduce(function (memo, stopWord) {
-    memo[stopWord] = stopWord
-    return memo
-  }, {})
-
-  return function (token) {
-    if (token && words[token.toString()] !== token.toString()) return token
-  }
-}
-
-/**
- * lunr.stopWordFilter is an English language stop word list filter, any words
- * contained in the list will not be passed through the filter.
- *
- * This is intended to be used in the Pipeline. If the token does not pass the
- * filter then undefined will be returned.
- *
- * @implements {lunr.PipelineFunction}
- * @params {lunr.Token} token - A token to check for being a stop word.
- * @returns {lunr.Token}
- * @see {@link lunr.Pipeline}
- */
-lunr.stopWordFilter = lunr.generateStopWordFilter([
-  'a',
-  'able',
-  'about',
-  'across',
-  'after',
-  'all',
-  'almost',
-  'also',
-  'am',
-  'among',
-  'an',
-  'and',
-  'any',
-  'are',
-  'as',
-  'at',
-  'be',
-  'because',
-  'been',
-  'but',
-  'by',
-  'can',
-  'cannot',
-  'could',
-  'dear',
-  'did',
-  'do',
-  'does',
-  'either',
-  'else',
-  'ever',
-  'every',
-  'for',
-  'from',
-  'get',
-  'got',
-  'had',
-  'has',
-  'have',
-  'he',
-  'her',
-  'hers',
-  'him',
-  'his',
-  'how',
-  'however',
-  'i',
-  'if',
-  'in',
-  'into',
-  'is',
-  'it',
-  'its',
-  'just',
-  'least',
-  'let',
-  'like',
-  'likely',
-  'may',
-  'me',
-  'might',
-  'most',
-  'must',
-  'my',
-  'neither',
-  'no',
-  'nor',
-  'not',
-  'of',
-  'off',
-  'often',
-  'on',
-  'only',
-  'or',
-  'other',
-  'our',
-  'own',
-  'rather',
-  'said',
-  'say',
-  'says',
-  'she',
-  'should',
-  'since',
-  'so',
-  'some',
-  'than',
-  'that',
-  'the',
-  'their',
-  'them',
-  'then',
-  'there',
-  'these',
-  'they',
-  'this',
-  'tis',
-  'to',
-  'too',
-  'twas',
-  'us',
-  'wants',
-  'was',
-  'we',
-  'were',
-  'what',
-  'when',
-  'where',
-  'which',
-  'while',
-  'who',
-  'whom',
-  'why',
-  'will',
-  'with',
-  'would',
-  'yet',
-  'you',
-  'your'
-])
-
-lunr.Pipeline.registerFunction(lunr.stopWordFilter, 'stopWordFilter')
-/*!
- * lunr.trimmer
- * Copyright (C) 2017 Oliver Nightingale
- */
-
-/**
- * lunr.trimmer is a pipeline function for trimming non word
- * characters from the beginning and end of tokens before they
- * enter the index.
- *
- * This implementation may not work correctly for non latin
- * characters and should either be removed or adapted for use
- * with languages with non-latin characters.
- *
- * @static
- * @implements {lunr.PipelineFunction}
- * @param {lunr.Token} token The token to pass through the filter
- * @returns {lunr.Token}
- * @see lunr.Pipeline
- */
-lunr.trimmer = function (token) {
-  return token.update(function (s) {
-    return s.replace(/^\W+/, '').replace(/\W+$/, '')
-  })
-}
-
-lunr.Pipeline.registerFunction(lunr.trimmer, 'trimmer')
-/*!
- * lunr.TokenSet
- * Copyright (C) 2017 Oliver Nightingale
- */
-
-/**
- * A token set is used to store the unique list of all tokens
- * within an index. Token sets are also used to represent an
- * incoming query to the index, this query token set and index
- * token set are then intersected to find which tokens to look
- * up in the inverted index.
- *
- * A token set can hold multiple tokens, as in the case of the
- * index token set, or it can hold a single token as in the
- * case of a simple query token set.
- *
- * Additionally token sets are used to perform wildcard matching.
- * Leading, contained and trailing wildcards are supported, and
- * from this edit distance matching can also be provided.
- *
- * Token sets are implemented as a minimal finite state automata,
- * where both common prefixes and suffixes are shared between tokens.
- * This helps to reduce the space used for storing the token set.
- *
- * @constructor
- */
-lunr.TokenSet = function () {
-  this.final = false
-  this.edges = {}
-  this.id = lunr.TokenSet._nextId
-  lunr.TokenSet._nextId += 1
-}
-
-/**
- * Keeps track of the next, auto increment, identifier to assign
- * to a new tokenSet.
- *
- * TokenSets require a unique identifier to be correctly minimised.
- *
- * @private
- */
-lunr.TokenSet._nextId = 1
-
-/**
- * Creates a TokenSet instance from the given sorted array of words.
- *
- * @param {String[]} arr - A sorted array of strings to create the set from.
- * @returns {lunr.TokenSet}
- * @throws Will throw an error if the input array is not sorted.
- */
-lunr.TokenSet.fromArray = function (arr) {
-  var builder = new lunr.TokenSet.Builder
-
-  for (var i = 0, len = arr.length; i < len; i++) {
-    builder.insert(arr[i])
-  }
-
-  builder.finish()
-  return builder.root
-}
-
-/**
- * Creates a token set from a query clause.
- *
- * @private
- * @param {Object} clause - A single clause from lunr.Query.
- * @param {string} clause.term - The query clause term.
- * @param {number} [clause.editDistance] - The optional edit distance for the term.
- * @returns {lunr.TokenSet}
- */
-lunr.TokenSet.fromClause = function (clause) {
-  if ('editDistance' in clause) {
-    return lunr.TokenSet.fromFuzzyString(clause.term, clause.editDistance)
-  } else {
-    return lunr.TokenSet.fromString(clause.term)
-  }
-}
-
-/**
- * Creates a token set representing a single string with a specified
- * edit distance.
- *
- * Insertions, deletions, substitutions and transpositions are each
- * treated as an edit distance of 1.
- *
- * Increasing the allowed edit distance will have a dramatic impact
- * on the performance of both creating and intersecting these TokenSets.
- * It is advised to keep the edit distance less than 3.
- *
- * @param {string} str - The string to create the token set from.
- * @param {number} editDistance - The allowed edit distance to match.
- * @returns {lunr.Vector}
- */
-lunr.TokenSet.fromFuzzyString = function (str, editDistance) {
-  var root = new lunr.TokenSet
-
-  var stack = [{
-    node: root,
-    editsRemaining: editDistance,
-    str: str
-  }]
-
-  while (stack.length) {
-    var frame = stack.pop()
-
-    // no edit
-    if (frame.str.length > 0) {
-      var char = frame.str.charAt(0),
-          noEditNode
-
-      if (char in frame.node.edges) {
-        noEditNode = frame.node.edges[char]
-      } else {
-        noEditNode = new lunr.TokenSet
-        frame.node.edges[char] = noEditNode
-      }
-
-      if (frame.str.length == 1) {
-        noEditNode.final = true
-      } else {
-        stack.push({
-          node: noEditNode,
-          editsRemaining: frame.editsRemaining,
-          str: frame.str.slice(1)
-        })
-      }
-    }
-
-    // deletion
-    // can only do a deletion if we have enough edits remaining
-    // and if there are characters left to delete in the string
-    if (frame.editsRemaining > 0 && frame.str.length > 1) {
-      var char = frame.str.charAt(1),
-          deletionNode
-
-      if (char in frame.node.edges) {
-        deletionNode = frame.node.edges[char]
-      } else {
-        deletionNode = new lunr.TokenSet
-        frame.node.edges[char] = deletionNode
-      }
-
-      if (frame.str.length <= 2) {
-        deletionNode.final = true
-      } else {
-        stack.push({
-          node: deletionNode,
-          editsRemaining: frame.editsRemaining - 1,
-          str: frame.str.slice(2)
-        })
-      }
-    }
-
-    // deletion
-    // just removing the last character from the str
-    if (frame.editsRemaining > 0 && frame.str.length == 1) {
-      frame.node.final = true
-    }
-
-    // substitution
-    // can only do a substitution if we have enough edits remaining
-    // and if there are characters left to substitute
-    if (frame.editsRemaining > 0 && frame.str.length >= 1) {
-      if ("*" in frame.node.edges) {
-        var substitutionNode = frame.node.edges["*"]
-      } else {
-        var substitutionNode = new lunr.TokenSet
-        frame.node.edges["*"] = substitutionNode
-      }
-
-      if (frame.str.length == 1) {
-        substitutionNode.final = true
-      } else {
-        stack.push({
-          node: substitutionNode,
-          editsRemaining: frame.editsRemaining - 1,
-          str: frame.str.slice(1)
-        })
-      }
-    }
-
-    // insertion
-    // can only do insertion if there are edits remaining
-    if (frame.editsRemaining > 0) {
-      if ("*" in frame.node.edges) {
-        var insertionNode = frame.node.edges["*"]
-      } else {
-        var insertionNode = new lunr.TokenSet
-        frame.node.edges["*"] = insertionNode
-      }
-
-      if (frame.str.length == 0) {
-        insertionNode.final = true
-      } else {
-        stack.push({
-          node: insertionNode,
-          editsRemaining: frame.editsRemaining - 1,
-          str: frame.str
-        })
-      }
-    }
-
-    // transposition
-    // can only do a transposition if there are edits remaining
-    // and there are enough characters to transpose
-    if (frame.editsRemaining > 0 && frame.str.length > 1) {
-      var charA = frame.str.charAt(0),
-          charB = frame.str.charAt(1),
-          transposeNode
-
-      if (charB in frame.node.edges) {
-        transposeNode = frame.node.edges[charB]
-      } else {
-        transposeNode = new lunr.TokenSet
-        frame.node.edges[charB] = transposeNode
-      }
-
-      if (frame.str.length == 1) {
-        transposeNode.final = true
-      } else {
-        stack.push({
-          node: transposeNode,
-          editsRemaining: frame.editsRemaining - 1,
-          str: charA + frame.str.slice(2)
-        })
-      }
-    }
-  }
-
-  return root
-}
-
-/**
- * Creates a TokenSet from a string.
- *
- * The string may contain one or more wildcard characters (*)
- * that will allow wildcard matching when intersecting with
- * another TokenSet.
- *
- * @param {string} str - The string to create a TokenSet from.
- * @returns {lunr.TokenSet}
- */
-lunr.TokenSet.fromString = function (str) {
-  var node = new lunr.TokenSet,
-      root = node,
-      wildcardFound = false
-
-  /*
-   * Iterates through all characters within the passed string
-   * appending a node for each character.
-   *
-   * As soon as a wildcard character is found then a self
-   * referencing edge is introduced to continually match
-   * any number of any characters.
-   */
-  for (var i = 0, len = str.length; i < len; i++) {
-    var char = str[i],
-        final = (i == len - 1)
-
-    if (char == "*") {
-      wildcardFound = true
-      node.edges[char] = node
-      node.final = final
-
-    } else {
-      var next = new lunr.TokenSet
-      next.final = final
-
-      node.edges[char] = next
-      node = next
-
-      // TODO: is this needed anymore?
-      if (wildcardFound) {
-        node.edges["*"] = root
-      }
-    }
-  }
-
-  return root
-}
-
-/**
- * Converts this TokenSet into an array of strings
- * contained within the TokenSet.
- *
- * @returns {string[]}
- */
-lunr.TokenSet.prototype.toArray = function () {
-  var words = []
-
-  var stack = [{
-    prefix: "",
-    node: this
-  }]
-
-  while (stack.length) {
-    var frame = stack.pop(),
-        edges = Object.keys(frame.node.edges),
-        len = edges.length
-
-    if (frame.node.final) {
-      words.push(frame.prefix)
-    }
-
-    for (var i = 0; i < len; i++) {
-      var edge = edges[i]
-
-      stack.push({
-        prefix: frame.prefix.concat(edge),
-        node: frame.node.edges[edge]
-      })
-    }
-  }
-
-  return words
-}
-
-/**
- * Generates a string representation of a TokenSet.
- *
- * This is intended to allow TokenSets to be used as keys
- * in objects, largely to aid the construction and minimisation
- * of a TokenSet. As such it is not designed to be a human
- * friendly representation of the TokenSet.
- *
- * @returns {string}
- */
-lunr.TokenSet.prototype.toString = function () {
-  // NOTE: Using Object.keys here as this.edges is very likely
-  // to enter 'hash-mode' with many keys being added
-  //
-  // avoiding a for-in loop here as it leads to the function
-  // being de-optimised (at least in V8). From some simple
-  // benchmarks the performance is comparable, but allowing
-  // V8 to optimize may mean easy performance wins in the future.
-
-  if (this._str) {
-    return this._str
-  }
-
-  var str = this.final ? '1' : '0',
-      labels = Object.keys(this.edges).sort(),
-      len = labels.length
-
-  for (var i = 0; i < len; i++) {
-    var label = labels[i],
-        node = this.edges[label]
-
-    str = str + label + node.id
-  }
-
-  return str
-}
-
-/**
- * Returns a new TokenSet that is the intersection of
- * this TokenSet and the passed TokenSet.
- *
- * This intersection will take into account any wildcards
- * contained within the TokenSet.
- *
- * @param {lunr.TokenSet} b - An other TokenSet to intersect with.
- * @returns {lunr.TokenSet}
- */
-lunr.TokenSet.prototype.intersect = function (b) {
-  var output = new lunr.TokenSet,
-      frame = undefined
-
-  var stack = [{
-    qNode: b,
-    output: output,
-    node: this
-  }]
-
-  while (stack.length) {
-    frame = stack.pop()
-
-    // NOTE: As with the #toString method, we are using
-    // Object.keys and a for loop instead of a for-in loop
-    // as both of these objects enter 'hash' mode, causing
-    // the function to be de-optimised in V8
-    var qEdges = Object.keys(frame.qNode.edges),
-        qLen = qEdges.length,
-        nEdges = Object.keys(frame.node.edges),
-        nLen = nEdges.length
-
-    for (var q = 0; q < qLen; q++) {
-      var qEdge = qEdges[q]
-
-      for (var n = 0; n < nLen; n++) {
-        var nEdge = nEdges[n]
-
-        if (nEdge == qEdge || qEdge == '*') {
-          var node = frame.node.edges[nEdge],
-              qNode = frame.qNode.edges[qEdge],
-              final = node.final && qNode.final,
-              next = undefined
-
-          if (nEdge in frame.output.edges) {
-            // an edge already exists for this character
-            // no need to create a new node, just set the finality
-            // bit unless this node is already final
-            next = frame.output.edges[nEdge]
-            next.final = next.final || final
-
-          } else {
-            // no edge exists yet, must create one
-            // set the finality bit and insert it
-            // into the output
-            next = new lunr.TokenSet
-            next.final = final
-            frame.output.edges[nEdge] = next
-          }
-
-          stack.push({
-            qNode: qNode,
-            output: next,
-            node: node
-          })
-        }
-      }
-    }
-  }
-
-  return output
-}
-lunr.TokenSet.Builder = function () {
-  this.previousWord = ""
-  this.root = new lunr.TokenSet
-  this.uncheckedNodes = []
-  this.minimizedNodes = {}
-}
-
-lunr.TokenSet.Builder.prototype.insert = function (word) {
-  var node,
-      commonPrefix = 0
-
-  if (word < this.previousWord) {
-    throw new Error ("Out of order word insertion")
-  }
-
-  for (var i = 0; i < word.length && i < this.previousWord.length; i++) {
-    if (word[i] != this.previousWord[i]) break
-    commonPrefix++
-  }
-
-  this.minimize(commonPrefix)
-
-  if (this.uncheckedNodes.length == 0) {
-    node = this.root
-  } else {
-    node = this.uncheckedNodes[this.uncheckedNodes.length - 1].child
-  }
-
-  for (var i = commonPrefix; i < word.length; i++) {
-    var nextNode = new lunr.TokenSet,
-        char = word[i]
-
-    node.edges[char] = nextNode
-
-    this.uncheckedNodes.push({
-      parent: node,
-      char: char,
-      child: nextNode
-    })
-
-    node = nextNode
-  }
-
-  node.final = true
-  this.previousWord = word
-}
-
-lunr.TokenSet.Builder.prototype.finish = function () {
-  this.minimize(0)
-}
-
-lunr.TokenSet.Builder.prototype.minimize = function (downTo) {
-  for (var i = this.uncheckedNodes.length - 1; i >= downTo; i--) {
-    var node = this.uncheckedNodes[i],
-        childKey = node.child.toString()
-
-    if (childKey in this.minimizedNodes) {
-      node.parent.edges[node.char] = this.minimizedNodes[childKey]
-    } else {
-      // Cache the key for this node since
-      // we know it can't change anymore
-      node.child._str = childKey
-
-      this.minimizedNodes[childKey] = node.child
-    }
-
-    this.uncheckedNodes.pop()
-  }
-}
-/*!
- * lunr.Index
- * Copyright (C) 2017 Oliver Nightingale
- */
-
-/**
- * An index contains the built index of all documents and provides a query interface
- * to the index.
- *
- * Usually instances of lunr.Index will not be created using this constructor, instead
- * lunr.Builder should be used to construct new indexes, or lunr.Index.load should be
- * used to load previously built and serialized indexes.
- *
- * @constructor
- * @param {Object} attrs - The attributes of the built search index.
- * @param {Object} attrs.invertedIndex - An index of term/field to document reference.
- * @param {Object<string, lunr.Vector>} attrs.documentVectors - Document vectors keyed by document reference.
- * @param {lunr.TokenSet} attrs.tokenSet - An set of all corpus tokens.
- * @param {string[]} attrs.fields - The names of indexed document fields.
- * @param {lunr.Pipeline} attrs.pipeline - The pipeline to use for search terms.
- */
-lunr.Index = function (attrs) {
-  this.invertedIndex = attrs.invertedIndex
-  this.fieldVectors = attrs.fieldVectors
-  this.tokenSet = attrs.tokenSet
-  this.fields = attrs.fields
-  this.pipeline = attrs.pipeline
-}
-
-/**
- * A result contains details of a document matching a search query.
- * @typedef {Object} lunr.Index~Result
- * @property {string} ref - The reference of the document this result represents.
- * @property {number} score - A number between 0 and 1 representing how similar this document is to the query.
- * @property {lunr.MatchData} matchData - Contains metadata about this match including which term(s) caused the match.
- */
-
-/**
- * Although lunr provides the ability to create queries using lunr.Query, it also provides a simple
- * query language which itself is parsed into an instance of lunr.Query.
- *
- * For programmatically building queries it is advised to directly use lunr.Query, the query language
- * is best used for human entered text rather than program generated text.
- *
- * At its simplest queries can just be a single term, e.g. `hello`, multiple terms are also supported
- * and will be combined with OR, e.g `hello world` will match documents that contain either 'hello'
- * or 'world', though those that contain both will rank higher in the results.
- *
- * Wildcards can be included in terms to match one or more unspecified characters, these wildcards can
- * be inserted anywhere within the term, and more than one wildcard can exist in a single term. Adding
- * wildcards will increase the number of documents that will be found but can also have a negative
- * impact on query performance, especially with wildcards at the beginning of a term.
- *
- * Terms can be restricted to specific fields, e.g. `title:hello`, only documents with the term
- * hello in the title field will match this query. Using a field not present in the index will lead
- * to an error being thrown.
- *
- * Modifiers can also be added to terms, lunr supports edit distance and boost modifiers on terms. A term
- * boost will make documents matching that term score higher, e.g. `foo^5`. Edit distance is also supported
- * to provide fuzzy matching, e.g. 'hello~2' will match documents with hello with an edit distance of 2.
- * Avoid large values for edit distance to improve query performance.
- *
- * To escape special characters the backslash character '\' can be used, this allows searches to include
- * characters that would normally be considered modifiers, e.g. `foo\~2` will search for a term "foo~2" instead
- * of attempting to apply a boost of 2 to the search term "foo".
- *
- * @typedef {string} lunr.Index~QueryString
- * @example <caption>Simple single term query</caption>
- * hello
- * @example <caption>Multiple term query</caption>
- * hello world
- * @example <caption>term scoped to a field</caption>
- * title:hello
- * @example <caption>term with a boost of 10</caption>
- * hello^10
- * @example <caption>term with an edit distance of 2</caption>
- * hello~2
- */
-
-/**
- * Performs a search against the index using lunr query syntax.
- *
- * Results will be returned sorted by their score, the most relevant results
- * will be returned first.
- *
- * For more programmatic querying use lunr.Index#query.
- *
- * @param {lunr.Index~QueryString} queryString - A string containing a lunr query.
- * @throws {lunr.QueryParseError} If the passed query string cannot be parsed.
- * @returns {lunr.Index~Result[]}
- */
-lunr.Index.prototype.search = function (queryString) {
-  return this.query(function (query) {
-    var parser = new lunr.QueryParser(queryString, query)
-    parser.parse()
-  })
-}
-
-/**
- * A query builder callback provides a query object to be used to express
- * the query to perform on the index.
- *
- * @callback lunr.Index~queryBuilder
- * @param {lunr.Query} query - The query object to build up.
- * @this lunr.Query
- */
-
-/**
- * Performs a query against the index using the yielded lunr.Query object.
- *
- * If performing programmatic queries against the index, this method is preferred
- * over lunr.Index#search so as to avoid the additional query parsing overhead.
- *
- * A query object is yielded to the supplied function which should be used to
- * express the query to be run against the index.
- *
- * Note that although this function takes a callback parameter it is _not_ an
- * asynchronous operation, the callback is just yielded a query object to be
- * customized.
- *
- * @param {lunr.Index~queryBuilder} fn - A function that is used to build the query.
- * @returns {lunr.Index~Result[]}
- */
-lunr.Index.prototype.query = function (fn) {
-  // for each query clause
-  // * process terms
-  // * expand terms from token set
-  // * find matching documents and metadata
-  // * get document vectors
-  // * score documents
-
-  var query = new lunr.Query(this.fields),
-      matchingFields = Object.create(null),
-      queryVectors = Object.create(null),
-      termFieldCache = Object.create(null)
-
-  fn.call(query, query)
-
-  for (var i = 0; i < query.clauses.length; i++) {
-    /*
-     * Unless the pipeline has been disabled for this term, which is
-     * the case for terms with wildcards, we need to pass the clause
-     * term through the search pipeline. A pipeline returns an array
-     * of processed terms. Pipeline functions may expand the passed
-     * term, which means we may end up performing multiple index lookups
-     * for a single query term.
-     */
-    var clause = query.clauses[i],
-        terms = null
-
-    if (clause.usePipeline) {
-      terms = this.pipeline.runString(clause.term)
-    } else {
-      terms = [clause.term]
-    }
-
-    for (var m = 0; m < terms.length; m++) {
-      var term = terms[m]
-
-      /*
-       * Each term returned from the pipeline needs to use the same query
-       * clause object, e.g. the same boost and or edit distance. The
-       * simplest way to do this is to re-use the clause object but mutate
-       * its term property.
-       */
-      clause.term = term
-
-      /*
-       * From the term in the clause we create a token set which will then
-       * be used to intersect the indexes token set to get a list of terms
-       * to lookup in the inverted index
-       */
-      var termTokenSet = lunr.TokenSet.fromClause(clause),
-          expandedTerms = this.tokenSet.intersect(termTokenSet).toArray()
-
-      for (var j = 0; j < expandedTerms.length; j++) {
-        /*
-         * For each term get the posting and termIndex, this is required for
-         * building the query vector.
-         */
-        var expandedTerm = expandedTerms[j],
-            posting = this.invertedIndex[expandedTerm],
-            termIndex = posting._index
-
-        for (var k = 0; k < clause.fields.length; k++) {
-          /*
-           * For each field that this query term is scoped by (by default
-           * all fields are in scope) we need to get all the document refs
-           * that have this term in that field.
-           *
-           * The posting is the entry in the invertedIndex for the matching
-           * term from above.
-           */
-          var field = clause.fields[k],
-              fieldPosting = posting[field],
-              matchingDocumentRefs = Object.keys(fieldPosting),
-              termField = expandedTerm + "/" + field
-
-          /*
-           * To support field level boosts a query vector is created per
-           * field. This vector is populated using the termIndex found for
-           * the term and a unit value with the appropriate boost applied.
-           *
-           * If the query vector for this field does not exist yet it needs
-           * to be created.
-           */
-          if (queryVectors[field] === undefined) {
-            queryVectors[field] = new lunr.Vector
-          }
-
-          /*
-           * Using upsert because there could already be an entry in the vector
-           * for the term we are working with. In that case we just add the scores
-           * together.
-           */
-          queryVectors[field].upsert(termIndex, 1 * clause.boost, function (a, b) { return a + b })
-
-          /**
-           * If we've already seen this term, field combo then we've already collected
-           * the matching documents and metadata, no need to go through all that again
-           */
-          if (termFieldCache[termField]) {
-            continue
-          }
-
-          for (var l = 0; l < matchingDocumentRefs.length; l++) {
-            /*
-             * All metadata for this term/field/document triple
-             * are then extracted and collected into an instance
-             * of lunr.MatchData ready to be returned in the query
-             * results
-             */
-            var matchingDocumentRef = matchingDocumentRefs[l],
-                matchingFieldRef = new lunr.FieldRef (matchingDocumentRef, field),
-                metadata = fieldPosting[matchingDocumentRef],
-                fieldMatch
-
-            if ((fieldMatch = matchingFields[matchingFieldRef]) === undefined) {
-              matchingFields[matchingFieldRef] = new lunr.MatchData (expandedTerm, field, metadata)
-            } else {
-              fieldMatch.add(expandedTerm, field, metadata)
-            }
-
-          }
-
-          termFieldCache[termField] = true
-        }
-      }
-    }
-  }
-
-  var matchingFieldRefs = Object.keys(matchingFields),
-      results = [],
-      matches = Object.create(null)
-
-  for (var i = 0; i < matchingFieldRefs.length; i++) {
-    /*
-     * Currently we have document fields that match the query, but we
-     * need to return documents. The matchData and scores are combined
-     * from multiple fields belonging to the same document.
-     *
-     * Scores are calculated by field, using the query vectors created
-     * above, and combined into a final document score using addition.
-     */
-    var fieldRef = lunr.FieldRef.fromString(matchingFieldRefs[i]),
-        docRef = fieldRef.docRef,
-        fieldVector = this.fieldVectors[fieldRef],
-        score = queryVectors[fieldRef.fieldName].similarity(fieldVector),
-        docMatch
-
-    if ((docMatch = matches[docRef]) !== undefined) {
-      docMatch.score += score
-      docMatch.matchData.combine(matchingFields[fieldRef])
-    } else {
-      var match = {
-        ref: docRef,
-        score: score,
-        matchData: matchingFields[fieldRef]
-      }
-      matches[docRef] = match
-      results.push(match)
-    }
-  }
-
-  /*
-   * Sort the results objects by score, highest first.
-   */
-  return results.sort(function (a, b) {
-    return b.score - a.score
-  })
-}
-
-/**
- * Prepares the index for JSON serialization.
- *
- * The schema for this JSON blob will be described in a
- * separate JSON schema file.
- *
- * @returns {Object}
- */
-lunr.Index.prototype.toJSON = function () {
-  var invertedIndex = Object.keys(this.invertedIndex)
-    .sort()
-    .map(function (term) {
-      return [term, this.invertedIndex[term]]
-    }, this)
-
-  var fieldVectors = Object.keys(this.fieldVectors)
-    .map(function (ref) {
-      return [ref, this.fieldVectors[ref].toJSON()]
-    }, this)
-
-  return {
-    version: lunr.version,
-    fields: this.fields,
-    fieldVectors: fieldVectors,
-    invertedIndex: invertedIndex,
-    pipeline: this.pipeline.toJSON()
-  }
-}
-
-/**
- * Loads a previously serialized lunr.Index
- *
- * @param {Object} serializedIndex - A previously serialized lunr.Index
- * @returns {lunr.Index}
- */
-lunr.Index.load = function (serializedIndex) {
-  var attrs = {},
-      fieldVectors = {},
-      serializedVectors = serializedIndex.fieldVectors,
-      invertedIndex = {},
-      serializedInvertedIndex = serializedIndex.invertedIndex,
-      tokenSetBuilder = new lunr.TokenSet.Builder,
-      pipeline = lunr.Pipeline.load(serializedIndex.pipeline)
-
-  if (serializedIndex.version != lunr.version) {
-    lunr.utils.warn("Version mismatch when loading serialised index. Current version of lunr '" + lunr.version + "' does not match serialized index '" + serializedIndex.version + "'")
-  }
-
-  for (var i = 0; i < serializedVectors.length; i++) {
-    var tuple = serializedVectors[i],
-        ref = tuple[0],
-        elements = tuple[1]
-
-    fieldVectors[ref] = new lunr.Vector(elements)
-  }
-
-  for (var i = 0; i < serializedInvertedIndex.length; i++) {
-    var tuple = serializedInvertedIndex[i],
-        term = tuple[0],
-        posting = tuple[1]
-
-    tokenSetBuilder.insert(term)
-    invertedIndex[term] = posting
-  }
-
-  tokenSetBuilder.finish()
-
-  attrs.fields = serializedIndex.fields
-
-  attrs.fieldVectors = fieldVectors
-  attrs.invertedIndex = invertedIndex
-  attrs.tokenSet = tokenSetBuilder.root
-  attrs.pipeline = pipeline
-
-  return new lunr.Index(attrs)
-}
-/*!
- * lunr.Builder
- * Copyright (C) 2017 Oliver Nightingale
- */
-
-/**
- * lunr.Builder performs indexing on a set of documents and
- * returns instances of lunr.Index ready for querying.
- *
- * All configuration of the index is done via the builder, the
- * fields to index, the document reference, the text processing
- * pipeline and document scoring parameters are all set on the
- * builder before indexing.
- *
- * @constructor
- * @property {string} _ref - Internal reference to the document reference field.
- * @property {string[]} _fields - Internal reference to the document fields to index.
- * @property {object} invertedIndex - The inverted index maps terms to document fields.
- * @property {object} documentTermFrequencies - Keeps track of document term frequencies.
- * @property {object} documentLengths - Keeps track of the length of documents added to the index.
- * @property {lunr.tokenizer} tokenizer - Function for splitting strings into tokens for indexing.
- * @property {lunr.Pipeline} pipeline - The pipeline performs text processing on tokens before indexing.
- * @property {lunr.Pipeline} searchPipeline - A pipeline for processing search terms before querying the index.
- * @property {number} documentCount - Keeps track of the total number of documents indexed.
- * @property {number} _b - A parameter to control field length normalization, setting this to 0 disabled normalization, 1 fully normalizes field lengths, the default value is 0.75.
- * @property {number} _k1 - A parameter to control how quickly an increase in term frequency results in term frequency saturation, the default value is 1.2.
- * @property {number} termIndex - A counter incremented for each unique term, used to identify a terms position in the vector space.
- * @property {array} metadataWhitelist - A list of metadata keys that have been whitelisted for entry in the index.
- */
-lunr.Builder = function () {
-  this._ref = "id"
-  this._fields = []
-  this.invertedIndex = Object.create(null)
-  this.fieldTermFrequencies = {}
-  this.fieldLengths = {}
-  this.tokenizer = lunr.tokenizer
-  this.pipeline = new lunr.Pipeline
-  this.searchPipeline = new lunr.Pipeline
-  this.documentCount = 0
-  this._b = 0.75
-  this._k1 = 1.2
-  this.termIndex = 0
-  this.metadataWhitelist = []
-}
-
-/**
- * Sets the document field used as the document reference. Every document must have this field.
- * The type of this field in the document should be a string, if it is not a string it will be
- * coerced into a string by calling toString.
- *
- * The default ref is 'id'.
- *
- * The ref should _not_ be changed during indexing, it should be set before any documents are
- * added to the index. Changing it during indexing can lead to inconsistent results.
- *
- * @param {string} ref - The name of the reference field in the document.
- */
-lunr.Builder.prototype.ref = function (ref) {
-  this._ref = ref
-}
-
-/**
- * Adds a field to the list of document fields that will be indexed. Every document being
- * indexed should have this field. Null values for this field in indexed documents will
- * not cause errors but will limit the chance of that document being retrieved by searches.
- *
- * All fields should be added before adding documents to the index. Adding fields after
- * a document has been indexed will have no effect on already indexed documents.
- *
- * @param {string} field - The name of a field to index in all documents.
- */
-lunr.Builder.prototype.field = function (field) {
-  this._fields.push(field)
-}
-
-/**
- * A parameter to tune the amount of field length normalisation that is applied when
- * calculating relevance scores. A value of 0 will completely disable any normalisation
- * and a value of 1 will fully normalise field lengths. The default is 0.75. Values of b
- * will be clamped to the range 0 - 1.
- *
- * @param {number} number - The value to set for this tuning parameter.
- */
-lunr.Builder.prototype.b = function (number) {
-  if (number < 0) {
-    this._b = 0
-  } else if (number > 1) {
-    this._b = 1
-  } else {
-    this._b = number
-  }
-}
-
-/**
- * A parameter that controls the speed at which a rise in term frequency results in term
- * frequency saturation. The default value is 1.2. Setting this to a higher value will give
- * slower saturation levels, a lower value will result in quicker saturation.
- *
- * @param {number} number - The value to set for this tuning parameter.
- */
-lunr.Builder.prototype.k1 = function (number) {
-  this._k1 = number
-}
-
-/**
- * Adds a document to the index.
- *
- * Before adding fields to the index the index should have been fully setup, with the document
- * ref and all fields to index already having been specified.
- *
- * The document must have a field name as specified by the ref (by default this is 'id') and
- * it should have all fields defined for indexing, though null or undefined values will not
- * cause errors.
- *
- * @param {object} doc - The document to add to the index.
- */
-lunr.Builder.prototype.add = function (doc) {
-  var docRef = doc[this._ref]
-
-  this.documentCount += 1
-
-  for (var i = 0; i < this._fields.length; i++) {
-    var fieldName = this._fields[i],
-        field = doc[fieldName],
-        tokens = this.tokenizer(field),
-        terms = this.pipeline.run(tokens),
-        fieldRef = new lunr.FieldRef (docRef, fieldName),
-        fieldTerms = Object.create(null)
-
-    this.fieldTermFrequencies[fieldRef] = fieldTerms
-    this.fieldLengths[fieldRef] = 0
-
-    // store the length of this field for this document
-    this.fieldLengths[fieldRef] += terms.length
-
-    // calculate term frequencies for this field
-    for (var j = 0; j < terms.length; j++) {
-      var term = terms[j]
-
-      if (fieldTerms[term] == undefined) {
-        fieldTerms[term] = 0
-      }
-
-      fieldTerms[term] += 1
-
-      // add to inverted index
-      // create an initial posting if one doesn't exist
-      if (this.invertedIndex[term] == undefined) {
-        var posting = Object.create(null)
-        posting["_index"] = this.termIndex
-        this.termIndex += 1
-
-        for (var k = 0; k < this._fields.length; k++) {
-          posting[this._fields[k]] = Object.create(null)
-        }
-
-        this.invertedIndex[term] = posting
-      }
-
-      // add an entry for this term/fieldName/docRef to the invertedIndex
-      if (this.invertedIndex[term][fieldName][docRef] == undefined) {
-        this.invertedIndex[term][fieldName][docRef] = Object.create(null)
-      }
-
-      // store all whitelisted metadata about this token in the
-      // inverted index
-      for (var l = 0; l < this.metadataWhitelist.length; l++) {
-        var metadataKey = this.metadataWhitelist[l],
-            metadata = term.metadata[metadataKey]
-
-        if (this.invertedIndex[term][fieldName][docRef][metadataKey] == undefined) {
-          this.invertedIndex[term][fieldName][docRef][metadataKey] = []
-        }
-
-        this.invertedIndex[term][fieldName][docRef][metadataKey].push(metadata)
-      }
-    }
-
-  }
-}
-
-/**
- * Calculates the average document length for this index
- *
- * @private
- */
-lunr.Builder.prototype.calculateAverageFieldLengths = function () {
-
-  var fieldRefs = Object.keys(this.fieldLengths),
-      numberOfFields = fieldRefs.length,
-      accumulator = {},
-      documentsWithField = {}
-
-  for (var i = 0; i < numberOfFields; i++) {
-    var fieldRef = lunr.FieldRef.fromString(fieldRefs[i]),
-        field = fieldRef.fieldName
-
-    documentsWithField[field] || (documentsWithField[field] = 0)
-    documentsWithField[field] += 1
-
-    accumulator[field] || (accumulator[field] = 0)
-    accumulator[field] += this.fieldLengths[fieldRef]
-  }
-
-  for (var i = 0; i < this._fields.length; i++) {
-    var field = this._fields[i]
-    accumulator[field] = accumulator[field] / documentsWithField[field]
-  }
-
-  this.averageFieldLength = accumulator
-}
-
-/**
- * Builds a vector space model of every document using lunr.Vector
- *
- * @private
- */
-lunr.Builder.prototype.createFieldVectors = function () {
-  var fieldVectors = {},
-      fieldRefs = Object.keys(this.fieldTermFrequencies),
-      fieldRefsLength = fieldRefs.length,
-      termIdfCache = Object.create(null)
-
-  for (var i = 0; i < fieldRefsLength; i++) {
-    var fieldRef = lunr.FieldRef.fromString(fieldRefs[i]),
-        field = fieldRef.fieldName,
-        fieldLength = this.fieldLengths[fieldRef],
-        fieldVector = new lunr.Vector,
-        termFrequencies = this.fieldTermFrequencies[fieldRef],
-        terms = Object.keys(termFrequencies),
-        termsLength = terms.length
-
-    for (var j = 0; j < termsLength; j++) {
-      var term = terms[j],
-          tf = termFrequencies[term],
-          termIndex = this.invertedIndex[term]._index,
-          idf, score, scoreWithPrecision
-
-      if (termIdfCache[term] === undefined) {
-        idf = lunr.idf(this.invertedIndex[term], this.documentCount)
-        termIdfCache[term] = idf
-      } else {
-        idf = termIdfCache[term]
-      }
-
-      score = idf * ((this._k1 + 1) * tf) / (this._k1 * (1 - this._b + this._b * (fieldLength / this.averageFieldLength[field])) + tf)
-      scoreWithPrecision = Math.round(score * 1000) / 1000
-      // Converts 1.23456789 to 1.234.
-      // Reducing the precision so that the vectors take up less
-      // space when serialised. Doing it now so that they behave
-      // the same before and after serialisation. Also, this is
-      // the fastest approach to reducing a number's precision in
-      // JavaScript.
-
-      fieldVector.insert(termIndex, scoreWithPrecision)
-    }
-
-    fieldVectors[fieldRef] = fieldVector
-  }
-
-  this.fieldVectors = fieldVectors
-}
-
-/**
- * Creates a token set of all tokens in the index using lunr.TokenSet
- *
- * @private
- */
-lunr.Builder.prototype.createTokenSet = function () {
-  this.tokenSet = lunr.TokenSet.fromArray(
-    Object.keys(this.invertedIndex).sort()
-  )
-}
-
-/**
- * Builds the index, creating an instance of lunr.Index.
- *
- * This completes the indexing process and should only be called
- * once all documents have been added to the index.
- *
- * @returns {lunr.Index}
- */
-lunr.Builder.prototype.build = function () {
-  this.calculateAverageFieldLengths()
-  this.createFieldVectors()
-  this.createTokenSet()
-
-  return new lunr.Index({
-    invertedIndex: this.invertedIndex,
-    fieldVectors: this.fieldVectors,
-    tokenSet: this.tokenSet,
-    fields: this._fields,
-    pipeline: this.searchPipeline
-  })
-}
-
-/**
- * Applies a plugin to the index builder.
- *
- * A plugin is a function that is called with the index builder as its context.
- * Plugins can be used to customise or extend the behaviour of the index
- * in some way. A plugin is just a function, that encapsulated the custom
- * behaviour that should be applied when building the index.
- *
- * The plugin function will be called with the index builder as its argument, additional
- * arguments can also be passed when calling use. The function will be called
- * with the index builder as its context.
- *
- * @param {Function} plugin The plugin to apply.
- */
-lunr.Builder.prototype.use = function (fn) {
-  var args = Array.prototype.slice.call(arguments, 1)
-  args.unshift(this)
-  fn.apply(this, args)
-}
-/**
- * Contains and collects metadata about a matching document.
- * A single instance of lunr.MatchData is returned as part of every
- * lunr.Index~Result.
- *
- * @constructor
- * @param {string} term - The term this match data is associated with
- * @param {string} field - The field in which the term was found
- * @param {object} metadata - The metadata recorded about this term in this field
- * @property {object} metadata - A cloned collection of metadata associated with this document.
- * @see {@link lunr.Index~Result}
- */
-lunr.MatchData = function (term, field, metadata) {
-  var clonedMetadata = Object.create(null),
-      metadataKeys = Object.keys(metadata)
-
-  // Cloning the metadata to prevent the original
-  // being mutated during match data combination.
-  // Metadata is kept in an array within the inverted
-  // index so cloning the data can be done with
-  // Array#slice
-  for (var i = 0; i < metadataKeys.length; i++) {
-    var key = metadataKeys[i]
-    clonedMetadata[key] = metadata[key].slice()
-  }
-
-  this.metadata = Object.create(null)
-  this.metadata[term] = Object.create(null)
-  this.metadata[term][field] = clonedMetadata
-}
-
-/**
- * An instance of lunr.MatchData will be created for every term that matches a
- * document. However only one instance is required in a lunr.Index~Result. This
- * method combines metadata from another instance of lunr.MatchData with this
- * objects metadata.
- *
- * @param {lunr.MatchData} otherMatchData - Another instance of match data to merge with this one.
- * @see {@link lunr.Index~Result}
- */
-lunr.MatchData.prototype.combine = function (otherMatchData) {
-  var terms = Object.keys(otherMatchData.metadata)
-
-  for (var i = 0; i < terms.length; i++) {
-    var term = terms[i],
-        fields = Object.keys(otherMatchData.metadata[term])
-
-    if (this.metadata[term] == undefined) {
-      this.metadata[term] = Object.create(null)
-    }
-
-    for (var j = 0; j < fields.length; j++) {
-      var field = fields[j],
-          keys = Object.keys(otherMatchData.metadata[term][field])
-
-      if (this.metadata[term][field] == undefined) {
-        this.metadata[term][field] = Object.create(null)
-      }
-
-      for (var k = 0; k < keys.length; k++) {
-        var key = keys[k]
-
-        if (this.metadata[term][field][key] == undefined) {
-          this.metadata[term][field][key] = otherMatchData.metadata[term][field][key]
-        } else {
-          this.metadata[term][field][key] = this.metadata[term][field][key].concat(otherMatchData.metadata[term][field][key])
-        }
-
-      }
-    }
-  }
-}
-
-/**
- * Add metadata for a term/field pair to this instance of match data.
- *
- * @param {string} term - The term this match data is associated with
- * @param {string} field - The field in which the term was found
- * @param {object} metadata - The metadata recorded about this term in this field
- */
-lunr.MatchData.prototype.add = function (term, field, metadata) {
-  if (!(term in this.metadata)) {
-    this.metadata[term] = Object.create(null)
-    this.metadata[term][field] = metadata
-    return
-  }
-
-  if (!(field in this.metadata[term])) {
-    this.metadata[term][field] = metadata
-    return
-  }
-
-  var metadataKeys = Object.keys(metadata)
-
-  for (var i = 0; i < metadataKeys.length; i++) {
-    var key = metadataKeys[i]
-
-    if (key in this.metadata[term][field]) {
-      this.metadata[term][field][key] = this.metadata[term][field][key].concat(metadata[key])
-    } else {
-      this.metadata[term][field][key] = metadata[key]
-    }
-  }
-}
-/**
- * A lunr.Query provides a programmatic way of defining queries to be performed
- * against a {@link lunr.Index}.
- *
- * Prefer constructing a lunr.Query using the {@link lunr.Index#query} method
- * so the query object is pre-initialized with the right index fields.
- *
- * @constructor
- * @property {lunr.Query~Clause[]} clauses - An array of query clauses.
- * @property {string[]} allFields - An array of all available fields in a lunr.Index.
- */
-lunr.Query = function (allFields) {
-  this.clauses = []
-  this.allFields = allFields
-}
-
-/**
- * Constants for indicating what kind of automatic wildcard insertion will be used when constructing a query clause.
- *
- * This allows wildcards to be added to the beginning and end of a term without having to manually do any string
- * concatenation.
- *
- * The wildcard constants can be bitwise combined to select both leading and trailing wildcards.
- *
- * @constant
- * @default
- * @property {number} wildcard.NONE - The term will have no wildcards inserted, this is the default behaviour
- * @property {number} wildcard.LEADING - Prepend the term with a wildcard, unless a leading wildcard already exists
- * @property {number} wildcard.TRAILING - Append a wildcard to the term, unless a trailing wildcard already exists
- * @see lunr.Query~Clause
- * @see lunr.Query#clause
- * @see lunr.Query#term
- * @example <caption>query term with trailing wildcard</caption>
- * query.term('foo', { wildcard: lunr.Query.wildcard.TRAILING })
- * @example <caption>query term with leading and trailing wildcard</caption>
- * query.term('foo', {
- *   wildcard: lunr.Query.wildcard.LEADING | lunr.Query.wildcard.TRAILING
- * })
- */
-lunr.Query.wildcard = new String ("*")
-lunr.Query.wildcard.NONE = 0
-lunr.Query.wildcard.LEADING = 1
-lunr.Query.wildcard.TRAILING = 2
-
-/**
- * A single clause in a {@link lunr.Query} contains a term and details on how to
- * match that term against a {@link lunr.Index}.
- *
- * @typedef {Object} lunr.Query~Clause
- * @property {string[]} fields - The fields in an index this clause should be matched against.
- * @property {number} [boost=1] - Any boost that should be applied when matching this clause.
- * @property {number} [editDistance] - Whether the term should have fuzzy matching applied, and how fuzzy the match should be.
- * @property {boolean} [usePipeline] - Whether the term should be passed through the search pipeline.
- * @property {number} [wildcard=0] - Whether the term should have wildcards appended or prepended.
- */
-
-/**
- * Adds a {@link lunr.Query~Clause} to this query.
- *
- * Unless the clause contains the fields to be matched all fields will be matched. In addition
- * a default boost of 1 is applied to the clause.
- *
- * @param {lunr.Query~Clause} clause - The clause to add to this query.
- * @see lunr.Query~Clause
- * @returns {lunr.Query}
- */
-lunr.Query.prototype.clause = function (clause) {
-  if (!('fields' in clause)) {
-    clause.fields = this.allFields
-  }
-
-  if (!('boost' in clause)) {
-    clause.boost = 1
-  }
-
-  if (!('usePipeline' in clause)) {
-    clause.usePipeline = true
-  }
-
-  if (!('wildcard' in clause)) {
-    clause.wildcard = lunr.Query.wildcard.NONE
-  }
-
-  if ((clause.wildcard & lunr.Query.wildcard.LEADING) && (clause.term.charAt(0) != lunr.Query.wildcard)) {
-    clause.term = "*" + clause.term
-  }
-
-  if ((clause.wildcard & lunr.Query.wildcard.TRAILING) && (clause.term.slice(-1) != lunr.Query.wildcard)) {
-    clause.term = "" + clause.term + "*"
-  }
-
-  this.clauses.push(clause)
-
-  return this
-}
-
-/**
- * Adds a term to the current query, under the covers this will create a {@link lunr.Query~Clause}
- * to the list of clauses that make up this query.
- *
- * @param {string} term - The term to add to the query.
- * @param {Object} [options] - Any additional properties to add to the query clause.
- * @returns {lunr.Query}
- * @see lunr.Query#clause
- * @see lunr.Query~Clause
- * @example <caption>adding a single term to a query</caption>
- * query.term("foo")
- * @example <caption>adding a single term to a query and specifying search fields, term boost and automatic trailing wildcard</caption>
- * query.term("foo", {
- *   fields: ["title"],
- *   boost: 10,
- *   wildcard: lunr.Query.wildcard.TRAILING
- * })
- */
-lunr.Query.prototype.term = function (term, options) {
-  var clause = options || {}
-  clause.term = term
-
-  this.clause(clause)
-
-  return this
-}
-lunr.QueryParseError = function (message, start, end) {
-  this.name = "QueryParseError"
-  this.message = message
-  this.start = start
-  this.end = end
-}
-
-lunr.QueryParseError.prototype = new Error
-lunr.QueryLexer = function (str) {
-  this.lexemes = []
-  this.str = str
-  this.length = str.length
-  this.pos = 0
-  this.start = 0
-  this.escapeCharPositions = []
-}
-
-lunr.QueryLexer.prototype.run = function () {
-  var state = lunr.QueryLexer.lexText
-
-  while (state) {
-    state = state(this)
-  }
-}
-
-lunr.QueryLexer.prototype.sliceString = function () {
-  var subSlices = [],
-      sliceStart = this.start,
-      sliceEnd = this.pos
-
-  for (var i = 0; i < this.escapeCharPositions.length; i++) {
-    sliceEnd = this.escapeCharPositions[i]
-    subSlices.push(this.str.slice(sliceStart, sliceEnd))
-    sliceStart = sliceEnd + 1
-  }
-
-  subSlices.push(this.str.slice(sliceStart, this.pos))
-  this.escapeCharPositions.length = 0
-
-  return subSlices.join('')
-}
-
-lunr.QueryLexer.prototype.emit = function (type) {
-  this.lexemes.push({
-    type: type,
-    str: this.sliceString(),
-    start: this.start,
-    end: this.pos
-  })
-
-  this.start = this.pos
-}
-
-lunr.QueryLexer.prototype.escapeCharacter = function () {
-  this.escapeCharPositions.push(this.pos - 1)
-  this.pos += 1
-}
-
-lunr.QueryLexer.prototype.next = function () {
-  if (this.pos >= this.length) {
-    return lunr.QueryLexer.EOS
-  }
-
-  var char = this.str.charAt(this.pos)
-  this.pos += 1
-  return char
-}
-
-lunr.QueryLexer.prototype.width = function () {
-  return this.pos - this.start
-}
-
-lunr.QueryLexer.prototype.ignore = function () {
-  if (this.start == this.pos) {
-    this.pos += 1
-  }
-
-  this.start = this.pos
-}
-
-lunr.QueryLexer.prototype.backup = function () {
-  this.pos -= 1
-}
-
-lunr.QueryLexer.prototype.acceptDigitRun = function () {
-  var char, charCode
-
-  do {
-    char = this.next()
-    charCode = char.charCodeAt(0)
-  } while (charCode > 47 && charCode < 58)
-
-  if (char != lunr.QueryLexer.EOS) {
-    this.backup()
-  }
-}
-
-lunr.QueryLexer.prototype.more = function () {
-  return this.pos < this.length
-}
-
-lunr.QueryLexer.EOS = 'EOS'
-lunr.QueryLexer.FIELD = 'FIELD'
-lunr.QueryLexer.TERM = 'TERM'
-lunr.QueryLexer.EDIT_DISTANCE = 'EDIT_DISTANCE'
-lunr.QueryLexer.BOOST = 'BOOST'
-
-lunr.QueryLexer.lexField = function (lexer) {
-  lexer.backup()
-  lexer.emit(lunr.QueryLexer.FIELD)
-  lexer.ignore()
-  return lunr.QueryLexer.lexText
-}
-
-lunr.QueryLexer.lexTerm = function (lexer) {
-  if (lexer.width() > 1) {
-    lexer.backup()
-    lexer.emit(lunr.QueryLexer.TERM)
-  }
-
-  lexer.ignore()
-
-  if (lexer.more()) {
-    return lunr.QueryLexer.lexText
-  }
-}
-
-lunr.QueryLexer.lexEditDistance = function (lexer) {
-  lexer.ignore()
-  lexer.acceptDigitRun()
-  lexer.emit(lunr.QueryLexer.EDIT_DISTANCE)
-  return lunr.QueryLexer.lexText
-}
-
-lunr.QueryLexer.lexBoost = function (lexer) {
-  lexer.ignore()
-  lexer.acceptDigitRun()
-  lexer.emit(lunr.QueryLexer.BOOST)
-  return lunr.QueryLexer.lexText
-}
-
-lunr.QueryLexer.lexEOS = function (lexer) {
-  if (lexer.width() > 0) {
-    lexer.emit(lunr.QueryLexer.TERM)
-  }
-}
-
-// This matches the separator used when tokenising fields
-// within a document. These should match otherwise it is
-// not possible to search for some tokens within a document.
-//
-// It is possible for the user to change the separator on the
-// tokenizer so it _might_ clash with any other of the special
-// characters already used within the search string, e.g. :.
-//
-// This means that it is possible to change the separator in
-// such a way that makes some words unsearchable using a search
-// string.
-lunr.QueryLexer.termSeparator = lunr.tokenizer.separator
-
-lunr.QueryLexer.lexText = function (lexer) {
-  while (true) {
-    var char = lexer.next()
-
-    if (char == lunr.QueryLexer.EOS) {
-      return lunr.QueryLexer.lexEOS
-    }
-
-    // Escape character is '\'
-    if (char.charCodeAt(0) == 92) {
-      lexer.escapeCharacter()
-      continue
-    }
-
-    if (char == ":") {
-      return lunr.QueryLexer.lexField
-    }
-
-    if (char == "~") {
-      lexer.backup()
-      if (lexer.width() > 0) {
-        lexer.emit(lunr.QueryLexer.TERM)
-      }
-      return lunr.QueryLexer.lexEditDistance
-    }
-
-    if (char == "^") {
-      lexer.backup()
-      if (lexer.width() > 0) {
-        lexer.emit(lunr.QueryLexer.TERM)
-      }
-      return lunr.QueryLexer.lexBoost
-    }
-
-    if (char.match(lunr.QueryLexer.termSeparator)) {
-      return lunr.QueryLexer.lexTerm
-    }
-  }
-}
-
-lunr.QueryParser = function (str, query) {
-  this.lexer = new lunr.QueryLexer (str)
-  this.query = query
-  this.currentClause = {}
-  this.lexemeIdx = 0
-}
-
-lunr.QueryParser.prototype.parse = function () {
-  this.lexer.run()
-  this.lexemes = this.lexer.lexemes
-
-  var state = lunr.QueryParser.parseFieldOrTerm
-
-  while (state) {
-    state = state(this)
-  }
-
-  return this.query
-}
-
-lunr.QueryParser.prototype.peekLexeme = function () {
-  return this.lexemes[this.lexemeIdx]
-}
-
-lunr.QueryParser.prototype.consumeLexeme = function () {
-  var lexeme = this.peekLexeme()
-  this.lexemeIdx += 1
-  return lexeme
-}
-
-lunr.QueryParser.prototype.nextClause = function () {
-  var completedClause = this.currentClause
-  this.query.clause(completedClause)
-  this.currentClause = {}
-}
-
-lunr.QueryParser.parseFieldOrTerm = function (parser) {
-  var lexeme = parser.peekLexeme()
-
-  if (lexeme == undefined) {
-    return
-  }
-
-  switch (lexeme.type) {
-    case lunr.QueryLexer.FIELD:
-      return lunr.QueryParser.parseField
-    case lunr.QueryLexer.TERM:
-      return lunr.QueryParser.parseTerm
-    default:
-      var errorMessage = "expected either a field or a term, found " + lexeme.type
-
-      if (lexeme.str.length >= 1) {
-        errorMessage += " with value '" + lexeme.str + "'"
-      }
-
-      throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
-  }
-}
-
-lunr.QueryParser.parseField = function (parser) {
-  var lexeme = parser.consumeLexeme()
-
-  if (lexeme == undefined) {
-    return
-  }
-
-  if (parser.query.allFields.indexOf(lexeme.str) == -1) {
-    var possibleFields = parser.query.allFields.map(function (f) { return "'" + f + "'" }).join(', '),
-        errorMessage = "unrecognised field '" + lexeme.str + "', possible fields: " + possibleFields
-
-    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
-  }
-
-  parser.currentClause.fields = [lexeme.str]
-
-  var nextLexeme = parser.peekLexeme()
-
-  if (nextLexeme == undefined) {
-    var errorMessage = "expecting term, found nothing"
-    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
-  }
-
-  switch (nextLexeme.type) {
-    case lunr.QueryLexer.TERM:
-      return lunr.QueryParser.parseTerm
-    default:
-      var errorMessage = "expecting term, found '" + nextLexeme.type + "'"
-      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
-  }
-}
-
-lunr.QueryParser.parseTerm = function (parser) {
-  var lexeme = parser.consumeLexeme()
-
-  if (lexeme == undefined) {
-    return
-  }
-
-  parser.currentClause.term = lexeme.str.toLowerCase()
-
-  if (lexeme.str.indexOf("*") != -1) {
-    parser.currentClause.usePipeline = false
-  }
-
-  var nextLexeme = parser.peekLexeme()
-
-  if (nextLexeme == undefined) {
-    parser.nextClause()
-    return
-  }
-
-  switch (nextLexeme.type) {
-    case lunr.QueryLexer.TERM:
-      parser.nextClause()
-      return lunr.QueryParser.parseTerm
-    case lunr.QueryLexer.FIELD:
-      parser.nextClause()
-      return lunr.QueryParser.parseField
-    case lunr.QueryLexer.EDIT_DISTANCE:
-      return lunr.QueryParser.parseEditDistance
-    case lunr.QueryLexer.BOOST:
-      return lunr.QueryParser.parseBoost
-    default:
-      var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
-      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
-  }
-}
-
-lunr.QueryParser.parseEditDistance = function (parser) {
-  var lexeme = parser.consumeLexeme()
-
-  if (lexeme == undefined) {
-    return
-  }
-
-  var editDistance = parseInt(lexeme.str, 10)
-
-  if (isNaN(editDistance)) {
-    var errorMessage = "edit distance must be numeric"
-    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
-  }
-
-  parser.currentClause.editDistance = editDistance
-
-  var nextLexeme = parser.peekLexeme()
-
-  if (nextLexeme == undefined) {
-    parser.nextClause()
-    return
-  }
-
-  switch (nextLexeme.type) {
-    case lunr.QueryLexer.TERM:
-      parser.nextClause()
-      return lunr.QueryParser.parseTerm
-    case lunr.QueryLexer.FIELD:
-      parser.nextClause()
-      return lunr.QueryParser.parseField
-    case lunr.QueryLexer.EDIT_DISTANCE:
-      return lunr.QueryParser.parseEditDistance
-    case lunr.QueryLexer.BOOST:
-      return lunr.QueryParser.parseBoost
-    default:
-      var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
-      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
-  }
-}
-
-lunr.QueryParser.parseBoost = function (parser) {
-  var lexeme = parser.consumeLexeme()
-
-  if (lexeme == undefined) {
-    return
-  }
-
-  var boost = parseInt(lexeme.str, 10)
-
-  if (isNaN(boost)) {
-    var errorMessage = "boost must be numeric"
-    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
-  }
-
-  parser.currentClause.boost = boost
-
-  var nextLexeme = parser.peekLexeme()
-
-  if (nextLexeme == undefined) {
-    parser.nextClause()
-    return
-  }
-
-  switch (nextLexeme.type) {
-    case lunr.QueryLexer.TERM:
-      parser.nextClause()
-      return lunr.QueryParser.parseTerm
-    case lunr.QueryLexer.FIELD:
-      parser.nextClause()
-      return lunr.QueryParser.parseField
-    case lunr.QueryLexer.EDIT_DISTANCE:
-      return lunr.QueryParser.parseEditDistance
-    case lunr.QueryLexer.BOOST:
-      return lunr.QueryParser.parseBoost
-    default:
-      var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
-      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
-  }
-}
-
-  /**
-   * export the module via AMD, CommonJS or as a browser global
-   * Export code from https://github.com/umdjs/umd/blob/master/returnExports.js
-   */
-  ;(function (root, factory) {
-    if (typeof define === 'function' && define.amd) {
-      // AMD. Register as an anonymous module.
-      define(factory)
-    } else if (typeof exports === 'object') {
-      /**
-       * Node. Does not work with strict CommonJS, but
-       * only CommonJS-like enviroments that support module.exports,
-       * like Node.
-       */
-      module.exports = factory()
-    } else {
-      // Browser globals (root is window)
-      root.lunr = factory()
-    }
-  }(this, function () {
-    /**
-     * Just return a value to define the module export.
-     * This example returns an object, but the module
-     * can return a function as the exported value.
-     */
-    return lunr
-  }))
-})();
diff --git a/assets/js/lunr.min.js b/assets/js/lunr.min.js
new file mode 100644
index 0000000000..000c78c3a7
--- /dev/null
+++ b/assets/js/lunr.min.js
@@ -0,0 +1,6 @@
+/**
+ * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 2.3.6
+ * Copyright (C) 2019 Oliver Nightingale
+ * @license MIT
+ */
+!function(){var e,t,r,i,n,s,o,a,u,l,c,h,d,f,p,y,m,g,x,v,w,Q,k,S,E,L,b,P,T=function(e){var t=new T.Builder;return t.pipeline.add(T.trimmer,T.stopWordFilter,T.stemmer),t.searchPipeline.add(T.stemmer),e.call(t,t),t.build()};T.version="2.3.6",T.utils={},T.utils.warn=(e=this,function(t){e.console&&console.warn&&console.warn(t)}),T.utils.asString=function(e){return null==e?"":e.toString()},T.utils.clone=function(e){if(null==e)return e;for(var t=Object.create(null),r=Object.keys(e),i=0;i<r.length;i++){var n=r[i],s=e[n];if(Array.isArray(s))t[n]=s.slice();else{if("string"!=typeof s&&"number"!=typeof s&&"boolean"!=typeof s)throw new TypeError("clone is not deep and does not support nested objects");t[n]=s}}return t},T.FieldRef=function(e,t,r){this.docRef=e,this.fieldName=t,this._stringValue=r},T.FieldRef.joiner="/",T.FieldRef.fromString=function(e){var t=e.indexOf(T.FieldRef.joiner);if(-1===t)throw"malformed field ref string";var r=e.slice(0,t),i=e.slice(t+1);return new T.FieldRef(i,r,e)},T.FieldRef.prototype.toString=function(){return null==this._stringValue&&(this._stringValue=this.fieldName+T.FieldRef.joiner+this.docRef),this._stringValue},T.Set=function(e){if(this.elements=Object.create(null),e){this.length=e.length;for(var t=0;t<this.length;t++)this.elements[e[t]]=!0}else this.length=0},T.Set.complete={intersect:function(e){return e},union:function(e){return e},contains:function(){return!0}},T.Set.empty={intersect:function(){return this},union:function(e){return e},contains:function(){return!1}},T.Set.prototype.contains=function(e){return!!this.elements[e]},T.Set.prototype.intersect=function(e){var t,r,i,n=[];if(e===T.Set.complete)return this;if(e===T.Set.empty)return e;this.length<e.length?(t=this,r=e):(t=e,r=this),i=Object.keys(t.elements);for(var s=0;s<i.length;s++){var o=i[s];o in r.elements&&n.push(o)}return new T.Set(n)},T.Set.prototype.union=function(e){return e===T.Set.complete?T.Set.complete:e===T.Set.empty?this:new T.Set(Object.keys(this.elements).concat(Object.keys(e.elements)))},T.idf=function(e,t){var r=0;for(var i in e)"_index"!=i&&(r+=Object.keys(e[i]).length);var n=(t-r+.5)/(r+.5);return Math.log(1+Math.abs(n))},T.Token=function(e,t){this.str=e||"",this.metadata=t||{}},T.Token.prototype.toString=function(){return this.str},T.Token.prototype.update=function(e){return this.str=e(this.str,this.metadata),this},T.Token.prototype.clone=function(e){return e=e||function(e){return e},new T.Token(e(this.str,this.metadata),this.metadata)},T.tokenizer=function(e,t){if(null==e||null==e)return[];if(Array.isArray(e))return e.map(function(e){return new T.Token(T.utils.asString(e).toLowerCase(),T.utils.clone(t))});for(var r=e.toString().trim().toLowerCase(),i=r.length,n=[],s=0,o=0;s<=i;s++){var a=s-o;if(r.charAt(s).match(T.tokenizer.separator)||s==i){if(a>0){var u=T.utils.clone(t)||{};u.position=[o,a],u.index=n.length,n.push(new T.Token(r.slice(o,s),u))}o=s+1}}return n},T.tokenizer.separator=/[\s\-]+/,T.Pipeline=function(){this._stack=[]},T.Pipeline.registeredFunctions=Object.create(null),T.Pipeline.registerFunction=function(e,t){t in this.registeredFunctions&&T.utils.warn("Overwriting existing registered function: "+t),e.label=t,T.Pipeline.registeredFunctions[e.label]=e},T.Pipeline.warnIfFunctionNotRegistered=function(e){e.label&&e.label in this.registeredFunctions||T.utils.warn("Function is not registered with pipeline. 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this.elements},T.stemmer=(t={ational:"ate",tional:"tion",enci:"ence",anci:"ance",izer:"ize",bli:"ble",alli:"al",entli:"ent",eli:"e",ousli:"ous",ization:"ize",ation:"ate",ator:"ate",alism:"al",iveness:"ive",fulness:"ful",ousness:"ous",aliti:"al",iviti:"ive",biliti:"ble",logi:"log"},r={icate:"ic",ative:"",alize:"al",iciti:"ic",ical:"ic",ful:"",ness:""},i="[aeiouy]",n="[^aeiou][^aeiouy]*",s=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*"),o=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*[aeiouy][aeiou]*[^aeiou][^aeiouy]*"),a=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*([aeiouy][aeiou]*)?$"),u=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy]"),l=/^(.+?)(ss|i)es$/,c=/^(.+?)([^s])s$/,h=/^(.+?)eed$/,d=/^(.+?)(ed|ing)$/,f=/.$/,p=/(at|bl|iz)$/,y=new RegExp("([^aeiouylsz])\\1$"),m=new 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e}},T.stopWordFilter=T.generateStopWordFilter(["a","able","about","across","after","all","almost","also","am","among","an","and","any","are","as","at","be","because","been","but","by","can","cannot","could","dear","did","do","does","either","else","ever","every","for","from","get","got","had","has","have","he","her","hers","him","his","how","however","i","if","in","into","is","it","its","just","least","let","like","likely","may","me","might","most","must","my","neither","no","nor","not","of","off","often","on","only","or","other","our","own","rather","said","say","says","she","should","since","so","some","than","that","the","their","them","then","there","these","they","this","tis","to","too","twas","us","wants","was","we","were","what","when","where","which","while","who","whom","why","will","with","would","yet","you","your"]),T.Pipeline.registerFunction(T.stopWordFilter,"stopWordFilter"),T.trimmer=function(e){return e.update(function(e){return e.replace(/^\W+/,"").replace(/\W+$/,"")})},T.Pipeline.registerFunction(T.trimmer,"trimmer"),T.TokenSet=function(){this.final=!1,this.edges={},this.id=T.TokenSet._nextId,T.TokenSet._nextId+=1},T.TokenSet._nextId=1,T.TokenSet.fromArray=function(e){for(var t=new T.TokenSet.Builder,r=0,i=e.length;r<i;r++)t.insert(e[r]);return t.finish(),t.root},T.TokenSet.fromClause=function(e){return"editDistance"in e?T.TokenSet.fromFuzzyString(e.term,e.editDistance):T.TokenSet.fromString(e.term)},T.TokenSet.fromFuzzyString=function(e,t){for(var r=new T.TokenSet,i=[{node:r,editsRemaining:t,str:e}];i.length;){var n=i.pop();if(n.str.length>0){var s,o=n.str.charAt(0);o in n.node.edges?s=n.node.edges[o]:(s=new T.TokenSet,n.node.edges[o]=s),1==n.str.length&&(s.final=!0),i.push({node:s,editsRemaining:n.editsRemaining,str:n.str.slice(1)})}if(0!=n.editsRemaining){if("*"in n.node.edges)var a=n.node.edges["*"];else{a=new 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e=[],t=[{prefix:"",node:this}];t.length;){var r=t.pop(),i=Object.keys(r.node.edges),n=i.length;r.node.final&&(r.prefix.charAt(0),e.push(r.prefix));for(var s=0;s<n;s++){var o=i[s];t.push({prefix:r.prefix.concat(o),node:r.node.edges[o]})}}return e},T.TokenSet.prototype.toString=function(){if(this._str)return this._str;for(var e=this.final?"1":"0",t=Object.keys(this.edges).sort(),r=t.length,i=0;i<r;i++){var n=t[i];e=e+n+this.edges[n].id}return e},T.TokenSet.prototype.intersect=function(e){for(var t=new T.TokenSet,r=void 0,i=[{qNode:e,output:t,node:this}];i.length;){r=i.pop();for(var n=Object.keys(r.qNode.edges),s=n.length,o=Object.keys(r.node.edges),a=o.length,u=0;u<s;u++)for(var l=n[u],c=0;c<a;c++){var h=o[c];if(h==l||"*"==l){var d=r.node.edges[h],f=r.qNode.edges[l],p=d.final&&f.final,y=void 0;h in r.output.edges?(y=r.output.edges[h]).final=y.final||p:((y=new T.TokenSet).final=p,r.output.edges[h]=y),i.push({qNode:f,output:y,node:d})}}}return t},T.TokenSet.Builder=function(){this.previousWord="",this.root=new T.TokenSet,this.uncheckedNodes=[],this.minimizedNodes={}},T.TokenSet.Builder.prototype.insert=function(e){var t,r=0;if(e<this.previousWord)throw new Error("Out of order word insertion");for(var i=0;i<e.length&&i<this.previousWord.length&&e[i]==this.previousWord[i];i++)r++;this.minimize(r),t=0==this.uncheckedNodes.length?this.root:this.uncheckedNodes[this.uncheckedNodes.length-1].child;for(i=r;i<e.length;i++){var n=new T.TokenSet,s=e[i];t.edges[s]=n,this.uncheckedNodes.push({parent:t,char:s,child:n}),t=n}t.final=!0,this.previousWord=e},T.TokenSet.Builder.prototype.finish=function(){this.minimize(0)},T.TokenSet.Builder.prototype.minimize=function(e){for(var t=this.uncheckedNodes.length-1;t>=e;t--){var r=this.uncheckedNodes[t],i=r.child.toString();i in this.minimizedNodes?r.parent.edges[r.char]=this.minimizedNodes[i]:(r.child._str=i,this.minimizedNodes[i]=r.child),this.uncheckedNodes.pop()}},T.Index=function(e){this.invertedIndex=e.invertedIndex,this.fieldVectors=e.fieldVectors,this.tokenSet=e.tokenSet,this.fields=e.fields,this.pipeline=e.pipeline},T.Index.prototype.search=function(e){return this.query(function(t){new T.QueryParser(e,t).parse()})},T.Index.prototype.query=function(e){for(var t=new T.Query(this.fields),r=Object.create(null),i=Object.create(null),n=Object.create(null),s=Object.create(null),o=Object.create(null),a=0;a<this.fields.length;a++)i[this.fields[a]]=new T.Vector;e.call(t,t);for(a=0;a<t.clauses.length;a++){var u=t.clauses[a],l=null,c=T.Set.complete;l=u.usePipeline?this.pipeline.runString(u.term,{fields:u.fields}):[u.term];for(var h=0;h<l.length;h++){var d=l[h];u.term=d;var f=T.TokenSet.fromClause(u),p=this.tokenSet.intersect(f).toArray();if(0===p.length&&u.presence===T.Query.presence.REQUIRED){for(var y=0;y<u.fields.length;y++){s[F=u.fields[y]]=T.Set.empty}break}for(var m=0;m<p.length;m++){var g=p[m],x=this.invertedIndex[g],v=x._index;for(y=0;y<u.fields.length;y++){var w=x[F=u.fields[y]],Q=Object.keys(w),k=g+"/"+F,S=new T.Set(Q);if(u.presence==T.Query.presence.REQUIRED&&(c=c.union(S),void 0===s[F]&&(s[F]=T.Set.complete)),u.presence!=T.Query.presence.PROHIBITED){if(i[F].upsert(v,u.boost,function(e,t){return e+t}),!n[k]){for(var E=0;E<Q.length;E++){var L,b=Q[E],P=new T.FieldRef(b,F),O=w[b];void 0===(L=r[P])?r[P]=new T.MatchData(g,F,O):L.add(g,F,O)}n[k]=!0}}else void 0===o[F]&&(o[F]=T.Set.empty),o[F]=o[F].union(S)}}}if(u.presence===T.Query.presence.REQUIRED)for(y=0;y<u.fields.length;y++){s[F=u.fields[y]]=s[F].intersect(c)}}var I=T.Set.complete,R=T.Set.empty;for(a=0;a<this.fields.length;a++){var F;s[F=this.fields[a]]&&(I=I.intersect(s[F])),o[F]&&(R=R.union(o[F]))}var C=Object.keys(r),N=[],j=Object.create(null);if(t.isNegated()){C=Object.keys(this.fieldVectors);for(a=0;a<C.length;a++){P=C[a];var _=T.FieldRef.fromString(P);r[P]=new T.MatchData}}for(a=0;a<C.length;a++){var D=(_=T.FieldRef.fromString(C[a])).docRef;if(I.contains(D)&&!R.contains(D)){var A,B=this.fieldVectors[_],V=i[_.fieldName].similarity(B);if(void 0!==(A=j[D]))A.score+=V,A.matchData.combine(r[_]);else{var z={ref:D,score:V,matchData:r[_]};j[D]=z,N.push(z)}}}return N.sort(function(e,t){return t.score-e.score})},T.Index.prototype.toJSON=function(){var e=Object.keys(this.invertedIndex).sort().map(function(e){return[e,this.invertedIndex[e]]},this),t=Object.keys(this.fieldVectors).map(function(e){return[e,this.fieldVectors[e].toJSON()]},this);return{version:T.version,fields:this.fields,fieldVectors:t,invertedIndex:e,pipeline:this.pipeline.toJSON()}},T.Index.load=function(e){var t={},r={},i=e.fieldVectors,n=Object.create(null),s=e.invertedIndex,o=new T.TokenSet.Builder,a=T.Pipeline.load(e.pipeline);e.version!=T.version&&T.utils.warn("Version mismatch when loading serialised index. Current version of lunr '"+T.version+"' does not match serialized index '"+e.version+"'");for(var u=0;u<i.length;u++){var l=(h=i[u])[0],c=h[1];r[l]=new T.Vector(c)}for(u=0;u<s.length;u++){var h,d=(h=s[u])[0],f=h[1];o.insert(d),n[d]=f}return o.finish(),t.fields=e.fields,t.fieldVectors=r,t.invertedIndex=n,t.tokenSet=o.root,t.pipeline=a,new T.Index(t)},T.Builder=function(){this._ref="id",this._fields=Object.create(null),this._documents=Object.create(null),this.invertedIndex=Object.create(null),this.fieldTermFrequencies={},this.fieldLengths={},this.tokenizer=T.tokenizer,this.pipeline=new T.Pipeline,this.searchPipeline=new T.Pipeline,this.documentCount=0,this._b=.75,this._k1=1.2,this.termIndex=0,this.metadataWhitelist=[]},T.Builder.prototype.ref=function(e){this._ref=e},T.Builder.prototype.field=function(e,t){if(/\//.test(e))throw new RangeError("Field '"+e+"' contains illegal character '/'");this._fields[e]=t||{}},T.Builder.prototype.b=function(e){this._b=e<0?0:e>1?1:e},T.Builder.prototype.k1=function(e){this._k1=e},T.Builder.prototype.add=function(e,t){var r=e[this._ref],i=Object.keys(this._fields);this._documents[r]=t||{},this.documentCount+=1;for(var n=0;n<i.length;n++){var s=i[n],o=this._fields[s].extractor,a=o?o(e):e[s],u=this.tokenizer(a,{fields:[s]}),l=this.pipeline.run(u),c=new T.FieldRef(r,s),h=Object.create(null);this.fieldTermFrequencies[c]=h,this.fieldLengths[c]=0,this.fieldLengths[c]+=l.length;for(var d=0;d<l.length;d++){var f=l[d];if(null==h[f]&&(h[f]=0),h[f]+=1,null==this.invertedIndex[f]){var p=Object.create(null);p._index=this.termIndex,this.termIndex+=1;for(var y=0;y<i.length;y++)p[i[y]]=Object.create(null);this.invertedIndex[f]=p}null==this.invertedIndex[f][s][r]&&(this.invertedIndex[f][s][r]=Object.create(null));for(var m=0;m<this.metadataWhitelist.length;m++){var g=this.metadataWhitelist[m],x=f.metadata[g];null==this.invertedIndex[f][s][r][g]&&(this.invertedIndex[f][s][r][g]=[]),this.invertedIndex[f][s][r][g].push(x)}}}},T.Builder.prototype.calculateAverageFieldLengths=function(){for(var e=Object.keys(this.fieldLengths),t=e.length,r={},i={},n=0;n<t;n++){var s=T.FieldRef.fromString(e[n]),o=s.fieldName;i[o]||(i[o]=0),i[o]+=1,r[o]||(r[o]=0),r[o]+=this.fieldLengths[s]}var a=Object.keys(this._fields);for(n=0;n<a.length;n++){var u=a[n];r[u]=r[u]/i[u]}this.averageFieldLength=r},T.Builder.prototype.createFieldVectors=function(){for(var e={},t=Object.keys(this.fieldTermFrequencies),r=t.length,i=Object.create(null),n=0;n<r;n++){for(var s=T.FieldRef.fromString(t[n]),o=s.fieldName,a=this.fieldLengths[s],u=new T.Vector,l=this.fieldTermFrequencies[s],c=Object.keys(l),h=c.length,d=this._fields[o].boost||1,f=this._documents[s.docRef].boost||1,p=0;p<h;p++){var y,m,g,x=c[p],v=l[x],w=this.invertedIndex[x]._index;void 0===i[x]?(y=T.idf(this.invertedIndex[x],this.documentCount),i[x]=y):y=i[x],m=y*((this._k1+1)*v)/(this._k1*(1-this._b+this._b*(a/this.averageFieldLength[o]))+v),m*=d,m*=f,g=Math.round(1e3*m)/1e3,u.insert(w,g)}e[s]=u}this.fieldVectors=e},T.Builder.prototype.createTokenSet=function(){this.tokenSet=T.TokenSet.fromArray(Object.keys(this.invertedIndex).sort())},T.Builder.prototype.build=function(){return this.calculateAverageFieldLengths(),this.createFieldVectors(),this.createTokenSet(),new T.Index({invertedIndex:this.invertedIndex,fieldVectors:this.fieldVectors,tokenSet:this.tokenSet,fields:Object.keys(this._fields),pipeline:this.searchPipeline})},T.Builder.prototype.use=function(e){var t=Array.prototype.slice.call(arguments,1);t.unshift(this),e.apply(this,t)},T.MatchData=function(e,t,r){for(var i=Object.create(null),n=Object.keys(r||{}),s=0;s<n.length;s++){var o=n[s];i[o]=r[o].slice()}this.metadata=Object.create(null),void 0!==e&&(this.metadata[e]=Object.create(null),this.metadata[e][t]=i)},T.MatchData.prototype.combine=function(e){for(var t=Object.keys(e.metadata),r=0;r<t.length;r++){var i=t[r],n=Object.keys(e.metadata[i]);null==this.metadata[i]&&(this.metadata[i]=Object.create(null));for(var s=0;s<n.length;s++){var o=n[s],a=Object.keys(e.metadata[i][o]);null==this.metadata[i][o]&&(this.metadata[i][o]=Object.create(null));for(var u=0;u<a.length;u++){var l=a[u];null==this.metadata[i][o][l]?this.metadata[i][o][l]=e.metadata[i][o][l]:this.metadata[i][o][l]=this.metadata[i][o][l].concat(e.metadata[i][o][l])}}}},T.MatchData.prototype.add=function(e,t,r){if(!(e in this.metadata))return this.metadata[e]=Object.create(null),void(this.metadata[e][t]=r);if(t in this.metadata[e])for(var i=Object.keys(r),n=0;n<i.length;n++){var s=i[n];s in this.metadata[e][t]?this.metadata[e][t][s]=this.metadata[e][t][s].concat(r[s]):this.metadata[e][t][s]=r[s]}else this.metadata[e][t]=r},T.Query=function(e){this.clauses=[],this.allFields=e},T.Query.wildcard=new String("*"),T.Query.wildcard.NONE=0,T.Query.wildcard.LEADING=1,T.Query.wildcard.TRAILING=2,T.Query.presence={OPTIONAL:1,REQUIRED:2,PROHIBITED:3},T.Query.prototype.clause=function(e){return"fields"in e||(e.fields=this.allFields),"boost"in e||(e.boost=1),"usePipeline"in e||(e.usePipeline=!0),"wildcard"in e||(e.wildcard=T.Query.wildcard.NONE),e.wildcard&T.Query.wildcard.LEADING&&e.term.charAt(0)!=T.Query.wildcard&&(e.term="*"+e.term),e.wildcard&T.Query.wildcard.TRAILING&&e.term.slice(-1)!=T.Query.wildcard&&(e.term=e.term+"*"),"presence"in e||(e.presence=T.Query.presence.OPTIONAL),this.clauses.push(e),this},T.Query.prototype.isNegated=function(){for(var e=0;e<this.clauses.length;e++)if(this.clauses[e].presence!=T.Query.presence.PROHIBITED)return!1;return!0},T.Query.prototype.term=function(e,t){if(Array.isArray(e))return e.forEach(function(e){this.term(e,T.utils.clone(t))},this),this;var r=t||{};return r.term=e.toString(),this.clause(r),this},T.QueryParseError=function(e,t,r){this.name="QueryParseError",this.message=e,this.start=t,this.end=r},T.QueryParseError.prototype=new Error,T.QueryLexer=function(e){this.lexemes=[],this.str=e,this.length=e.length,this.pos=0,this.start=0,this.escapeCharPositions=[]},T.QueryLexer.prototype.run=function(){for(var e=T.QueryLexer.lexText;e;)e=e(this)},T.QueryLexer.prototype.sliceString=function(){for(var e=[],t=this.start,r=this.pos,i=0;i<this.escapeCharPositions.length;i++)r=this.escapeCharPositions[i],e.push(this.str.slice(t,r)),t=r+1;return e.push(this.str.slice(t,this.pos)),this.escapeCharPositions.length=0,e.join("")},T.QueryLexer.prototype.emit=function(e){this.lexemes.push({type:e,str:this.sliceString(),start:this.start,end:this.pos}),this.start=this.pos},T.QueryLexer.prototype.escapeCharacter=function(){this.escapeCharPositions.push(this.pos-1),this.pos+=1},T.QueryLexer.prototype.next=function(){if(this.pos>=this.length)return T.QueryLexer.EOS;var e=this.str.charAt(this.pos);return this.pos+=1,e},T.QueryLexer.prototype.width=function(){return this.pos-this.start},T.QueryLexer.prototype.ignore=function(){this.start==this.pos&&(this.pos+=1),this.start=this.pos},T.QueryLexer.prototype.backup=function(){this.pos-=1},T.QueryLexer.prototype.acceptDigitRun=function(){var e,t;do{t=(e=this.next()).charCodeAt(0)}while(t>47&&t<58);e!=T.QueryLexer.EOS&&this.backup()},T.QueryLexer.prototype.more=function(){return this.pos<this.length},T.QueryLexer.EOS="EOS",T.QueryLexer.FIELD="FIELD",T.QueryLexer.TERM="TERM",T.QueryLexer.EDIT_DISTANCE="EDIT_DISTANCE",T.QueryLexer.BOOST="BOOST",T.QueryLexer.PRESENCE="PRESENCE",T.QueryLexer.lexField=function(e){return e.backup(),e.emit(T.QueryLexer.FIELD),e.ignore(),T.QueryLexer.lexText},T.QueryLexer.lexTerm=function(e){if(e.width()>1&&(e.backup(),e.emit(T.QueryLexer.TERM)),e.ignore(),e.more())return T.QueryLexer.lexText},T.QueryLexer.lexEditDistance=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(T.QueryLexer.EDIT_DISTANCE),T.QueryLexer.lexText},T.QueryLexer.lexBoost=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(T.QueryLexer.BOOST),T.QueryLexer.lexText},T.QueryLexer.lexEOS=function(e){e.width()>0&&e.emit(T.QueryLexer.TERM)},T.QueryLexer.termSeparator=T.tokenizer.separator,T.QueryLexer.lexText=function(e){for(;;){var t=e.next();if(t==T.QueryLexer.EOS)return T.QueryLexer.lexEOS;if(92!=t.charCodeAt(0)){if(":"==t)return T.QueryLexer.lexField;if("~"==t)return e.backup(),e.width()>0&&e.emit(T.QueryLexer.TERM),T.QueryLexer.lexEditDistance;if("^"==t)return e.backup(),e.width()>0&&e.emit(T.QueryLexer.TERM),T.QueryLexer.lexBoost;if("+"==t&&1===e.width())return e.emit(T.QueryLexer.PRESENCE),T.QueryLexer.lexText;if("-"==t&&1===e.width())return e.emit(T.QueryLexer.PRESENCE),T.QueryLexer.lexText;if(t.match(T.QueryLexer.termSeparator))return T.QueryLexer.lexTerm}else e.escapeCharacter()}},T.QueryParser=function(e,t){this.lexer=new T.QueryLexer(e),this.query=t,this.currentClause={},this.lexemeIdx=0},T.QueryParser.prototype.parse=function(){this.lexer.run(),this.lexemes=this.lexer.lexemes;for(var e=T.QueryParser.parseClause;e;)e=e(this);return this.query},T.QueryParser.prototype.peekLexeme=function(){return this.lexemes[this.lexemeIdx]},T.QueryParser.prototype.consumeLexeme=function(){var e=this.peekLexeme();return this.lexemeIdx+=1,e},T.QueryParser.prototype.nextClause=function(){var e=this.currentClause;this.query.clause(e),this.currentClause={}},T.QueryParser.parseClause=function(e){var t=e.peekLexeme();if(null!=t)switch(t.type){case T.QueryLexer.PRESENCE:return T.QueryParser.parsePresence;case T.QueryLexer.FIELD:return T.QueryParser.parseField;case T.QueryLexer.TERM:return T.QueryParser.parseTerm;default:var r="expected either a field or a term, found "+t.type;throw t.str.length>=1&&(r+=" with value '"+t.str+"'"),new T.QueryParseError(r,t.start,t.end)}},T.QueryParser.parsePresence=function(e){var t=e.consumeLexeme();if(null!=t){switch(t.str){case"-":e.currentClause.presence=T.Query.presence.PROHIBITED;break;case"+":e.currentClause.presence=T.Query.presence.REQUIRED;break;default:var r="unrecognised presence operator'"+t.str+"'";throw new T.QueryParseError(r,t.start,t.end)}var i=e.peekLexeme();if(null==i){r="expecting term or field, found nothing";throw new T.QueryParseError(r,t.start,t.end)}switch(i.type){case T.QueryLexer.FIELD:return T.QueryParser.parseField;case T.QueryLexer.TERM:return T.QueryParser.parseTerm;default:r="expecting term or field, found '"+i.type+"'";throw new T.QueryParseError(r,i.start,i.end)}}},T.QueryParser.parseField=function(e){var t=e.consumeLexeme();if(null!=t){if(-1==e.query.allFields.indexOf(t.str)){var r=e.query.allFields.map(function(e){return"'"+e+"'"}).join(", "),i="unrecognised field '"+t.str+"', possible fields: "+r;throw new T.QueryParseError(i,t.start,t.end)}e.currentClause.fields=[t.str];var n=e.peekLexeme();if(null==n){i="expecting term, found nothing";throw new T.QueryParseError(i,t.start,t.end)}switch(n.type){case T.QueryLexer.TERM:return T.QueryParser.parseTerm;default:i="expecting term, found '"+n.type+"'";throw new T.QueryParseError(i,n.start,n.end)}}},T.QueryParser.parseTerm=function(e){var t=e.consumeLexeme();if(null!=t){e.currentClause.term=t.str.toLowerCase(),-1!=t.str.indexOf("*")&&(e.currentClause.usePipeline=!1);var r=e.peekLexeme();if(null!=r)switch(r.type){case T.QueryLexer.TERM:return e.nextClause(),T.QueryParser.parseTerm;case T.QueryLexer.FIELD:return e.nextClause(),T.QueryParser.parseField;case T.QueryLexer.EDIT_DISTANCE:return T.QueryParser.parseEditDistance;case T.QueryLexer.BOOST:return T.QueryParser.parseBoost;case T.QueryLexer.PRESENCE:return e.nextClause(),T.QueryParser.parsePresence;default:var i="Unexpected lexeme type '"+r.type+"'";throw new T.QueryParseError(i,r.start,r.end)}else e.nextClause()}},T.QueryParser.parseEditDistance=function(e){var t=e.consumeLexeme();if(null!=t){var r=parseInt(t.str,10);if(isNaN(r)){var i="edit distance must be numeric";throw new T.QueryParseError(i,t.start,t.end)}e.currentClause.editDistance=r;var n=e.peekLexeme();if(null!=n)switch(n.type){case T.QueryLexer.TERM:return e.nextClause(),T.QueryParser.parseTerm;case T.QueryLexer.FIELD:return e.nextClause(),T.QueryParser.parseField;case T.QueryLexer.EDIT_DISTANCE:return T.QueryParser.parseEditDistance;case T.QueryLexer.BOOST:return T.QueryParser.parseBoost;case T.QueryLexer.PRESENCE:return e.nextClause(),T.QueryParser.parsePresence;default:i="Unexpected lexeme type '"+n.type+"'";throw new T.QueryParseError(i,n.start,n.end)}else e.nextClause()}},T.QueryParser.parseBoost=function(e){var t=e.consumeLexeme();if(null!=t){var r=parseInt(t.str,10);if(isNaN(r)){var i="boost must be numeric";throw new T.QueryParseError(i,t.start,t.end)}e.currentClause.boost=r;var n=e.peekLexeme();if(null!=n)switch(n.type){case T.QueryLexer.TERM:return e.nextClause(),T.QueryParser.parseTerm;case T.QueryLexer.FIELD:return e.nextClause(),T.QueryParser.parseField;case T.QueryLexer.EDIT_DISTANCE:return T.QueryParser.parseEditDistance;case T.QueryLexer.BOOST:return T.QueryParser.parseBoost;case T.QueryLexer.PRESENCE:return e.nextClause(),T.QueryParser.parsePresence;default:i="Unexpected lexeme type '"+n.type+"'";throw new T.QueryParseError(i,n.start,n.end)}else e.nextClause()}},b=this,P=function(){return T},"function"==typeof define&&define.amd?define(P):"object"==typeof exports?module.exports=P():b.lunr=P()}();
\ No newline at end of file
diff --git a/assets/js/theme.js b/assets/js/theme.js
index 26b1635811..a177d0bc53 100644
--- a/assets/js/theme.js
+++ b/assets/js/theme.js
@@ -1,6 +1,6 @@
  // alertbar later
     $(document).scroll(function () {
-        var y = $(this).scrollTop();
+        const y = $(this).scrollTop();
         if (y > 280) {
             $('.alertbar').fadeIn();
         } else {
@@ -10,12 +10,13 @@
 
 
 // Hide Header on on scroll down
-    var didScroll;
-    var lastScrollTop = 0;
-    var delta = 5;
-    var navbarHeight = $('nav').outerHeight();
+    let didScroll;
+    let lastScrollTop = 0;
+    const delta = 5;
+    const $nav = $('nav');
+    const navbarHeight = $nav.outerHeight();
 
-    $(window).scroll(function(event){
+    $(window).scroll(function(){
         didScroll = true;
     });
 
@@ -27,7 +28,7 @@
     }, 250);
 
     function hasScrolled() {
-        var st = $(this).scrollTop();
+        const st = $(this).scrollTop();
         
         // Make sure they scroll more than delta
         if(Math.abs(lastScrollTop - st) <= delta)
@@ -37,13 +38,13 @@
         // This is necessary so you never see what is "behind" the navbar.
         if (st > lastScrollTop && st > navbarHeight){
             // Scroll Down            
-            $('nav').removeClass('nav-down').addClass('nav-up'); 
-            $('.nav-up').css('top', - $('nav').outerHeight() + 'px');
+            $nav.removeClass('nav-down').addClass('nav-up');
+            $('.nav-up').css('top', - $nav.outerHeight() + 'px');
            
         } else {
             // Scroll Up
             if(st + $(window).height() < $(document).height()) {               
-                $('nav').removeClass('nav-up').addClass('nav-down');
+                $nav.removeClass('nav-up').addClass('nav-down');
                 $('.nav-up, .nav-down').css('top', '0px');             
             }
         }
@@ -58,49 +59,49 @@
 function loadSearch(){
     // Create a new Index
     idx = lunr(function(){
-        this.field('id')
-        this.field('title', { boost: 10 })
-        this.field('summary')
-    })
+        this.field('id');
+        this.field('title', { boost: 10 });
+        this.field('summary');
+    });
  
     // Send a request to get the content json file
     $.getJSON('/content.json', function(data){
  
         // Put the data into the window global so it can be used later
-        window.searchData = data
+        window.searchData = data;
  
         // Loop through each entry and add it to the index
         $.each(data, function(index, entry){
-            idx.add($.extend({"id": index}, entry))
-        })
-    })
+            idx.add($.extend({"id": index}, entry));
+        });
+    });
  
     // When search is pressed on the menu toggle the search box
     $('#search').on('click', function(){
-        $('.searchForm').toggleClass('show')
-    })
+        $('.searchForm').toggleClass('show');
+    });
  
     // When the search form is submitted
     $('#searchForm').on('submit', function(e){
         // Stop the default action
-        e.preventDefault()
+        e.preventDefault();
  
         // Find the results from lunr
-        results = idx.search($('#searchField').val())
+        let results = idx.search($('#searchField').val());
  
         // Empty #content and put a list in for the results
         $('#content').html('<h1>Search Results (' + results.length + ')</h1>')
-        $('#content').append('<ul id="searchResults"></ul>')
+                     .append('<ul id="searchResults"></ul>');
  
         // Loop through results
         $.each(results, function(index, result){
             // Get the entry from the window global
-            entry = window.searchData[result.ref]
+            let entry = window.searchData[result.ref];
  
             // Append the entry to the list.
-            $('#searchResults').append('<li><a href="' + entry.url + '">' + entry.title + '</li>')
-        })
-    })
+            $('#searchResults').append('<li><a href="' + entry.url + '">' + entry.title + '</li>');
+        });
+    });
 }
 
 
@@ -111,7 +112,7 @@ $(function() {
     if (location.hash) {
       /* we need to scroll to the top of the window first, because the browser will always jump to the anchor first before JavaScript is ready, thanks Stack Overflow: http://stackoverflow.com/a/3659116 */
       window.scrollTo(0, 0);
-      target = location.hash.split('#');
+      let target = location.hash.split('#');
       smoothScrollTo($('#'+target[1]));
     }
   }, 1);
diff --git a/index.html b/index.html
index 47d007f79a..0cb97aa4c8 100644
--- a/index.html
+++ b/index.html
@@ -8,20 +8,20 @@
 
 
 <div class="container">
-    
+
 {% if page.url == "/" %}
-    
-    
-    
+
+
+
 <!-- Begin post excerpts, let's highlight the first 4 posts on top -->
 <div class="row remove-site-content-margin">
-    
+
     <!-- latest post -->
     {% assign latest_post = site.posts[0] %}
     <div class="col-md-6">
-    <div class="card border-0 mb-4 box-shadow">   
-    <a href="{{site.baseurl}}{{latest_post.url}}">
-    <div class="topfirstimage" style="background-image: url({% if latest_post.image contains "://" %}{{ latest_post.image }}{% else %} {{site.baseurl}}/{{ latest_post.image}}{% endif %}); height: 200px;    background-size: cover;    background-repeat: no-repeat;"></div>     
+    <div class="card border-0 mb-4 box-shadow">
+    <a href="{{site.baseurl}}{{latest_post.url}}" title="{{latest_post.title}}">
+    <div class="topfirstimage" style="background-image: url({% if latest_post.image contains "://" %}{{ latest_post.image }}{% else %} {{site.baseurl}}/{{ latest_post.image}}{% endif %}); height: 200px;    background-size: cover;    background-repeat: no-repeat;"></div>
     </a>
     <div class="card-body px-0 pb-0 d-flex flex-column align-items-start">
     <h2 class="h4 font-weight-bold">
@@ -36,7 +36,7 @@ <h2 class="h4 font-weight-bold">
                 {% for category in latest_post.categories %}
                 <a class="text-capitalize text-muted smoothscroll" href="{{site.baseurl}}/categories.html#{{ category | downcase }}">{{ category }}</a><span class="sep">, </span>
                 {% endfor %}
-                </span>                   
+                </span>
         </small>
         <small class="text-muted">
             {{ latest_post.date | date: '%b %d, %Y' }}
@@ -45,19 +45,19 @@ <h2 class="h4 font-weight-bold">
     </div>
     </div>
     </div>
-    
+
     <div class="col-md-6">
-        
+
         <!-- second latest post -->
-        {%- assign second_post = site.posts[1] -%}        
-        <div class="mb-3 d-flex align-items-center">                
+        {%- assign second_post = site.posts[1] -%}
+        <div class="mb-3 d-flex align-items-center">
                 {% if second_post.image %}
                 <div class="col-md-4">
                 <a href="{{site.baseurl}}{{second_post.url}}">
                  <img class="w-100" src="{% if second_post.image contains "://" %}{{ second_post.image }}{% else %}{{ second_post.image | absolute_url }}{% endif %}" alt="{{ second_post.title }}">
                 </a>
                 </div>
-                {% endif %}                
+                {% endif %}
                 <div>
                     <h2 class="mb-2 h6 font-weight-bold">
                     <a class="text-dark" href="{{site.baseurl}}{{second_post.url}}">{{ second_post.title }}</a>
@@ -67,24 +67,24 @@ <h2 class="mb-2 h6 font-weight-bold">
                         {% for category in second_post.categories %}
                         <a class="text-capitalize text-muted smoothscroll" href="{{site.baseurl}}/categories.html#{{ category | downcase }}">{{ category }}</a><span class="sep">, </span>
                         {% endfor %}
-                        </span>                   
+                        </span>
                     </small>
                     <small class="text-muted">
                         {{ second_post.date | date: '%b %d, %Y' }}
                     </small>
                 </div>
             </div>
-        
+
         <!-- third latest post -->
-        {%- assign third_post = site.posts[2] -%}        
-        <div class="mb-3 d-flex align-items-center">                
+        {%- assign third_post = site.posts[2] -%}
+        <div class="mb-3 d-flex align-items-center">
                 {% if third_post.image %}
                 <div class="col-md-4">
                 <a href="{{site.baseurl}}{{third_post.url}}">
                  <img class="w-100" src="{% if third_post.image contains "://" %}{{ third_post.image }}{% else %}{{site.baseurl}}/{{ third_post.image }}{% endif %}" alt="{{ third_post.title }}">
                 </a>
                 </div>
-                {% endif %}                
+                {% endif %}
                 <div>
                     <h2 class="mb-2 h6 font-weight-bold">
                     <a class="text-dark" href="{{site.baseurl}}{{third_post.url}}">{{ third_post.title }}</a>
@@ -94,24 +94,24 @@ <h2 class="mb-2 h6 font-weight-bold">
                         {% for category in third_post.categories %}
                         <a class="text-capitalize text-muted smoothscroll" href="{{site.baseurl}}/categories.html#{{ category | downcase }}">{{ category }}</a><span class="sep">, </span>
                         {% endfor %}
-                        </span>                   
+                        </span>
                     </small>
                     <small class="text-muted">
                         {{ third_post.date | date: '%b %d, %Y' }}
                     </small>
                 </div>
             </div>
-        
+
         <!-- fourth latest post -->
-        {%- assign fourth_post = site.posts[3] -%}        
-        <div class="mb-3 d-flex align-items-center">                
+        {%- assign fourth_post = site.posts[3] -%}
+        <div class="mb-3 d-flex align-items-center">
                 {% if fourth_post.image %}
                 <div class="col-md-4">
                 <a href="{{site.baseurl}}{{fourth_post.url}}">
                 <img class="w-100" src="{% if fourth_post.image contains "://" %}{{ fourth_post.image }}{% else %}{{site.baseurl}}/{{ fourth_post.image }}{% endif %}" alt="{{ fourth_post.title }}">
                 </a>
                 </div>
-                {% endif %}                
+                {% endif %}
                 <div>
                     <h2 class="mb-2 h6 font-weight-bold">
                     <a class="text-dark" href="{{site.baseurl}}{{fourth_post.url}}">{{ fourth_post.title }}</a>
@@ -121,20 +121,20 @@ <h2 class="mb-2 h6 font-weight-bold">
                         {% for category in fourth_post.categories %}
                         <a class="text-capitalize text-muted smoothscroll" href="{{site.baseurl}}/categories.html#{{ category | downcase }}">{{ category }}</a><span class="sep">, </span>
                         {% endfor %}
-                        </span>                   
+                        </span>
                     </small>
                     <small class="text-muted">
                         {{ fourth_post.date | date: '%b %d, %Y' }}
                     </small>
                 </div>
             </div>
-        
+
     </div>
-    
+
 </div>
-    
+
 <!-- Sticky - add sticky tag to the post you want to highlight here - tags: [sticky] -->
-{% for post in site.posts %} 
+{% for post in site.posts %}
 {% if post.tags contains "sticky" %}
 <div class="jumbotron jumbotron-fluid jumbotron-home pt-0 pb-0 mt-3 mb-2rem bg-lightblue position-relative">
     <div class="pl-4 pr-0 h-100 tofront">
@@ -150,37 +150,37 @@ <h1 class="mb-3">{{post.title}}</h1>
             </div>
         </div>
     </div>
-</div> 
+</div>
 {% endif %}
 {% endfor %}
 
 
-    
+
 
 
 {% endif %} <!--endif page url is / -->
-    
+
 
 
 <!-- Now the rest of the posts with the usual loop but with an offset:4 on the first page so we can skeep the first 4 posts displayed above -->
-    
+
 <div class="row mt-3">
-   
+
     <div class="col-md-8 main-loop">
-        
+
         <h4 class="font-weight-bold spanborder"><span>All Stories</span></h4>
-        
+
 
         {% for post in paginator.posts %}
-        
+
             {% include main-loop-card.html %}
-        
+
         {% endfor %}
-        
+
         <div class="mt-5">
          <!-- Pagination links -->
             {% if paginator.total_pages > 1 %}
-            <ul class="pagination"> 
+            <ul class="pagination">
               {% if paginator.previous_page %}
                 <li class="page-item"><a class="page-link" href="{{ paginator.previous_page_path | prepend: site.baseurl | replace: '//', '/' }}">&laquo; Prev</a></li>
               {% else %}
@@ -203,17 +203,17 @@ <h4 class="font-weight-bold spanborder"><span>All Stories</span></h4>
                 <li class="page-item disabled"><span class="next page-link">&raquo;</span></li>
               {% endif %}
             </ul>
-            {% endif %}      
+            {% endif %}
         </div>
-        
+
     </div>
-    
+
     <div class="col-md-4">
-        {% include sidebar-featured.html %}    
+        {% include sidebar-featured.html %}
     </div>
-    
+
 </div>
 
 
 
-</div>
\ No newline at end of file
+</div>
diff --git a/robots.txt b/robots.txt
new file mode 100644
index 0000000000..0a87e0ea85
--- /dev/null
+++ b/robots.txt
@@ -0,0 +1,4 @@
+---
+permalink: /robots.txt
+---
+Sitemap: {{site.host}}{{site.baseurl}}/sitemap.xml