Occurrences: add changelog

Signed-off-by: Paul-Elliot <[email protected]>

Author: panglesd

CHANGES.md

@@ -11,6 +11,8 @@
 - Display 'private' keyword for private type extensions (@gpetiot, #1019)
 - Allow to omit parent type in constructor reference (@panglesd,
   @EmileTrotignon, #933)
+- Add jumps to documentation in rendered source code, and a `count-occurrences`
+  flag and command to count occurrences of every identifiers (@panglesd, #976)
 
 ### Fixed