Update changelog

Author: facelessuser

CHANGES.md

@@ -1,12 +1,5 @@
 # ColorHelper
 
-## 6.7.0
-
--   **NEW**: Rework HTML, CSS, SCSS, SASS handling. As syntax packages  
-    have evolved, rework rules to better target colors, combining  
-    handling under one rule `HTML/CSS`.
--   **NEW**: Move handling for old, CSS3 syntax to its own rule.
-
 ## 6.4.6
 
 Fixes backported to Python 3.3, Sublime Text <= 4200.