Update changelog

Author: jdkandersson

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Release Notes
 
+## Version _next_
+
+- Add support for arbitrary mix in classes.
+
 ## Version 1.5.0 - 2020-08-22
 
 - Add support for generic `format` for `string` that are treated like a `string` without a `format`.
@@ -108,6 +112,7 @@
 - Add support for DateTime.
 
 ## Version 0.10.0 - 2019-11-23
+
 _Beta release_
 
 - Add check for whether foreign key for relationship is already constructed before automatically constructing it.
@@ -129,51 +134,63 @@ _Beta release_
 - Add support for one to many relationships.
 
 ## Version 0.8.0 - 2019-11-03
+
 - Add less verbose initialisation with `init_yaml` and `init_json`.
 - Remove need for separate models file by exposing `Base` and constructed models at `open_alchemy.models`.
 - Update name from OpenAPI-SQLAlchemy to OpenAlchemy
 
 ## Version 0.7.0 - 2019-10-27
+
 - Add support for Python 3.6.
 - Add connexion example application.
 - Fixed bug where referencing a schema which uses allOf in many to one relationships does not merge the allOf statement.
 - Fixed bug where a type hint that is not always exported from SQLAlchemy may cause an no member error.
 - Add schema checking for extension properties.
 
 ## Version 0.6.3 - 2019-10-19
+
 - Add support for backref for many to one relationships.
 - Refactor to remove reference resolving decorator.
 - Add integration tests for major features.
 
 ## Version 0.6.2 - 2019-10-19
+
 - Add support for python 3.8.
 
 ## Version 0.6.1 - 2019-10-19
+
 - Update name from openapi-SQLAlchemy to OpenAPI-SQLAlchemy. All urls are expected to keep working.
 
 ## Version 0.6.0 - 2019-10-6
+
 - Add support for `allOf` for models.
 
 ## Version 0.5.0 - 2019-09-29
+
 - Refactor column factory to use fewer decorators.
 - Change exceptions to include the schema name.
 - Add support for `$ref` for models.
 
 ## Version 0.4.0 - 2019-09-21
+
 - Add support for `allOf` for columns.
 
 ## Version 0.3.0 - 2019-09-08
+
 - Add support for `autoincrement`.
 - Add support for `$ref` for columns referencing other table objects.
 - Add documentation
 
 ## Version 0.2.0 - 2019-08-25
+
 - Add support for `$ref` for columns.
 
 ## Version 0.1.1 - 2019-08-18
+
 - Move typing-extensions development to package dependency.
 
 ## Version 0.1.0 - 2019-08-18
+
 - Initial release
 - Add support for `integer` columns.
 - Add support for `boolean` columns.