Add a mockup for 0.5.0 section in CHANGES.rst
CHANGES
--------
+0.5.0 (XXXX-XX-XX)
+^^^^^^^^^^^^^^^^^^
+
+New features:
+
+* Add full support for V2 format messages with a Cython extension. Those are
+ used for Kafka >= 0.11.0.0
+* Added support for indempotent producing with `enable_idempotence` parameter
+* Added support for `fetch_max_bytes` in AIOKafkaConsumer. This can help limit
+ the amount of data transferred in a single roundtrip to broker, which is
+ essential for consumers with large amount of partitions
+*
+
+Bugfixes:
+
+*
+
0.4.2 (2018-09-12)
^^^^^^^^^^^^^^^^^^
