Reflect changes of 1.1.0 release

Author: chaudum

CHANGES.md

@@ -1,13 +1,16 @@
 Changes
 =======
 
-- Added support for Python 3.9
 - Added support for MP4/iTunes album/artist tags
 - Updated the package structure so that the scripts are located in the `rgain`
   module. This means that they can now also be invoked using `python -m
   rgain3.replaygain` and `python -m rgain3.collectiongain`.
 - Added file type guessing based on magic numbers signature
-- Added support for Python 3.8
+
+rgain3 1.1.0 (2020-11-12)
+-------------------------
+
+- Added support for Python 3.8 and 3.9
 - Added this file to the source distribution
 - Added files necessary for the tests to the source distribution
 - Fixed some deprecation warnings