Merge branch 'fix/changelog' into 'master'

Fix order in changelog

See merge request !749

CHANGELOG.rst

@@ -9,6 +9,12 @@ and this project adheres to `Semantic Versioning`_.
 Unreleased
 ----------
 
+Added
+~~~~~
+
+* Provide an ``ExtensiblePolymorphicModel`` to support the features of extensible models for polymorphic models and vice-versa.
+
+
 Fixed
 ~~~~~
 
@@ -41,7 +47,6 @@ Added
 * OpenID Connect scope and accompanying claim ``groups``
 * Support config files in JSON format
 * Allow apps to dynamically generate OAuth scopes
-* Provide an ``ExtensiblePolymorphicModel`` to support the features of extensible models for polymorphic models and vice-versa.
 
 Changed
 ~~~~~~~