update changelog

Author: bckohan

doc/source/changelog.rst

@@ -2,6 +2,14 @@
 Change Log
 ==========
 
+v1.1.1
+======
+
+* Fixed `django-filter intergration for non-strict values does not work. <https://github.com/bckohan/django-enum/issues/6>`_
+* Implemented `Set EnumChoiceField to the default form field type. <https://github.com/bckohan/django-enum/issues/5>`_
+* Implemented `Coerce default values to Enum types. <https://github.com/bckohan/django-enum/issues/4>`_
+* Implemented `Use custom descriptor to coerce fields to Enum type on assignment. <https://github.com/bckohan/django-enum/issues/3>`_
+
 v1.0.1
 ======