Add missing v1.7.8 entries in changes.rst
@@ -4,6 +4,12 @@ Changes
Version 1.7.8
-------------
+* Cleanup and unclutter old and unused files in repository
+ By :user:`juarezr`, :issue:`606`.
+
+* Add tohtml with css styles test case
+ By :user:`juarezr`, :issue:`609`.
+
* Fix sortheader() to not overwrite data for duplicate column names
By :user:`arturponinski`, :issue:`392`.
