Add XGBoost to timeline information

Author: CAM-Gerlach

site.js

@@ -128,6 +128,10 @@ $(document).ready(function (){
       {content: 'Python 2 & 3', start: '2010-03-25', end:'2019-03-18', py2:true},
       {content: 'Python 3 only', start: '2019-03-19', end:'2023-12-31'},
     ],
+    'XGBoost':[
+      {content: 'Python 2 & 3', start: '2016-01-14', end:'2019-05-15', py2:true},
+      {content: 'Python 3 only', start: '2019-05-15', end:'2023-12-31'},
+    ],
     'ccxt':[
       {content: 'Python 2 & 3', start: '2017-05-14', end:'2019-12-31', py2:true},
       {content: 'Python 3 only', start: '2020-01-01', end:'2023-12-31'},