Added Changelog entry for #1637

Author: Nahuel Cuesta Luengo

CHANGELOG.md

@@ -3,6 +3,8 @@
 Breaking changes:
 
 Features:
+- [#1637](https://github.com/rails-api/active_model_serializers/pull/1637) Make references to 'ActionController::Base.cache_store' explicit
+  in order to avoid issues when application controllers inherit from 'ActionController::API'. (@ncuesta)
 - [#1633](https://github.com/rails-api/active_model_serializers/pull/1633) Yield 'serializer' to serializer association blocks. (@bf4)
 - [#1616](https://github.com/rails-api/active_model_serializers/pull/1616) SerializableResource handles no serializer like controller. (@bf4)
 - [#1618](https://github.com/rails-api/active_model_serializers/issues/1618) Get collection root key for