comment with notes about async handlers.
comment with notes about async handlers.

wikimedia/operations-debs-python-pykafka,benauthor/pykafka,tempbottle/pykafka,thedrow/samsa,sontek/pykafka,benauthor/pykafka,appsoma/pykafka,jofusa/pykafka,jofusa/pykafka,tempbottle/pykafka,vortec/pykafka,benauthor/pykafka,appsoma/pykafka,aeroevan/pykafka,wikimedia/operations-debs-python-pykafka,fortime/pykafka,thedrow/samsa,sontek/pykafka,yungchin/pykafka,sammerry/pykafka,fortime/pykafka,thedrow/samsa,vortec/pykafka,yungchin/pykafka,wikimedia/operations-debs-python-pykafka,aeroevan/pykafka,sammerry/pykafka