Remove changeReason and update CHANGES to prepare for 3.0.0 (#819)

* Remove changeReason and update CHANGES

* call out breaking changes

CHANGES.rst

@@ -3,16 +3,29 @@ Changes
 
 Unreleased
 ----------
+
+3.0.0 (2021-04-16)
+----------
+
+Breaking changes:
+
+- Removed support for Django 3.0
+- Removed `changeReason` in favor of `_change_reason` (see 2.10.0)
+
+Full list of changes:
+
 - Removed support for Django versions prior to 2.2 (gh-652)
 - Migrate from TravisCI to Github Actions (gh-739)
 - Add Python 3.9 support (gh-745)
 - Support ``ignore_conflicts`` in ``bulk_create_with_history`` (gh-733)
 - Use ``asgiref`` when available instead of thread locals (gh-747)
 - Sort imports with isort (gh-751)
 - Queryset ``history.as_of`` speed improvements by calculating in the DB (gh-758)
-- Increase `black` and `isort` python version to 3.6
-- Remove Django 3.0 support
-- Add Django 3.2 support
+- Increase `black` and `isort` python version to 3.6 (gh-817)
+- Remove Django 3.0 support (gh-817)
+- Add Django 3.2 support (gh-817)
+- Improve French translations (gh-811)
+- Remove support for changeReason (gh-819)
 
 2.12.0 (2020-10-14)
 -------------------

simple_history/utils.py

@@ -164,13 +164,4 @@ def get_change_reason_from_object(obj):
     if hasattr(obj, "_change_reason"):
         return getattr(obj, "_change_reason")
 
-    if hasattr(obj, "changeReason"):
-        warning_msg = (
-            "Using the attr changeReason to populate history_change_reason is"
-            " deprecated in 2.10.0 and will be removed in 3.0.0. Use "
-            "_change_reason instead. "
-        )
-        warnings.warn(warning_msg, DeprecationWarning)
-        return getattr(obj, "changeReason")
-
     return None