Update Changelog in preparation for 0.9.5 release
Update Changelog in preparation for 0.9.5 release

ohmu/kafka-python,Yelp/kafka-python,ohmu/kafka-python,Aloomaio/kafka-python,mumrah/kafka-python,dpkp/kafka-python,zackdever/kafka-python,gamechanger/kafka-python,scrapinghub/kafka-python,zackdever/kafka-python,Aloomaio/kafka-python,Yelp/kafka-python,wikimedia/operations-debs-python-kafka,dpkp/kafka-python,DataDog/kafka-python,mumrah/kafka-python,wikimedia/operations-debs-python-kafka,scrapinghub/kafka-python,gamechanger/kafka-python