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* Bumped kafka-python version to 1.3.1 and Kafka to 0.10.1.0.
* Fixed auto version detection, to correctly handle 0.10.0.0 version
* Updated Fetch and Produce requests to use v2 with v0.10.0 message format on brokers.
This allows a ``timestamp`` to be associated with messages.
* Changed lz4 compression framing, as it was changed due to KIP-57 in new message format.
* Minor refactorings
Big thanks to fabregas for the hard work on this release (PR 60)