add a new filter in the local extensions

Author: Chilipp

dir/local_extensions.py

@@ -3,3 +3,8 @@
 @simple_filter
 def add_1(s: str):
     return s + "1"
+
+@simple_filter
+def new_filter(s: str):
+    # a new filter to test the extension update
+    return s + " updated"

dir/{{ cookiecutter.project }}/README.md

@@ -1,3 +1,5 @@
 # Test file
 
 {{ "Updated" | add_1 | add_1 }}
+
+{{ "This has been " | new_filter }}