Change log for dropping 2.7 and 3.2 support.

Author: benjaminp

CHANGES

@@ -6,6 +6,8 @@ This file lists the changes in each six version.
 Development version
 -------------------
 
+- Issue #308, pull request #314: Remove support for Python 2.6 and Python 3.2.
+
 - Issue #250, issue #165, pull request #251: `six.wraps` now ignores missing
   attributes. This follows the Python 3.2+ standard library behavior.