aiokafka 0.5.1

Add SASL support and minor fixes to 0.5.0

on Python PyPI

New features:

• Add SASL support with both SASL plain and SASL GGSAPI. Support also includes
  Broker v0.9.0, but you will need to explicitly pass api_version="0.9".
  (Big thanks to @cyrbil and @jsurloppe for working on this)
• Added support for max_poll_interval_ms and rebalance_timeout_ms settings (
  issue #67)
• Added pause/resume API for AIOKafkaConsumer. (issue #304)
• Added header support to both AIOKafkaConsumer and AIOKafkaProducer for
  brokers v0.11 and above. (issue #462)

Bugfixes:

• Made sure to not request metadata for all topics if broker version is passed
  explicitly and is 0.10 and above. (issue #440, thanks to @ulrikjohansson)
• Make sure heartbeat task will close if group is reset. (issue #372)