add changelog

Author: graingert

README.md

@@ -156,7 +156,8 @@ tox
 ```
 
 ## Changelog
-
+- 2.0.0rc2 (unreleased)
+  - Add support for Python 3.11 and 3.12, drop dependency on six (#76)
 - 2.0.0rc1
   - Drop support for Python 2.6, 2.7, 3.4, 3.5 and 3.6 (#68)
   - Add support for Python 3.7, 3.8, 3.9 and 3.10 (#68)