Update changes.rst for 3.2 release.

Author: jamadden

CHANGES.rst

@@ -8,7 +8,10 @@
 - Remove support for Python 3.7 and 3.8.
 - Add untested, community supported implementation for RiscV 32. See
   `PR 438 <https://github.com/python-greenlet/greenlet/pull/439>`_.
-
+- Make greenlet build and run on Python 3.14a7. It will not build on
+  earlier 3.14 alpha releases, and may not build on later 3.14
+  releases.
+- Packaging: Use :pep:`639` license expressions and include license files.
 
 3.1.1 (2024-09-20)
 ==================