2.7.0-dev.2

Minor Version Features

• Added a membership_protocol kwarg to BalancedConsumer that allows switchable and
  user-defined membership protocols to be used
• Implemented GroupMembershipProtocol objects for the two standard partition assignment
  strategies
• Added an api_versions kwarg to Broker to facilitate switchable API protocol versions
• Added support for all versions of the MetadataRequest to Broker
• Added the controller_broker attribute to Cluster
• Added create_topics and delete_topics to Broker
• Added fetch_api_versions to Broker and Cluster
• Added a CLI for creating and deleting topics on the cluster to kafka_tools
• Added support for LZ4 compression to the Producer and SimpleConsumer

Bug Fixes

• Adjusted Cluster to become aware of supported API versions immediately upon
  instantiation
• Refactored code in Cluster related to metadata requests to make logic reusable for
  pre-bootstrap communication with the cluster
• Added the ability to pass arguments to protocol.Response instances when waiting
  on a future
• Adjusted the RandomPartitioner to avoid actually calling random.choice to improve
  performance
• Removed some calls in Producer.procuce to isinstance to improve performance
• Simplified retry logic in SimpleConsumer.fetch_offsets

Miscellaneous

• Used sudo: required to get around dead Travis machines
• Upgraded Travis tests to use Kafka 1.0.0
• Added Code of Conduct
• Documented release process
• Made PyKafka available via conda-forge
• Fleshed out the beginning of the usage guide
• Made kafka_instance fetch its binary from archive.apache.org instead of
  mirror.reverse.net because the latter removed old versions of Kafka