change to logging actual time vs CPU time
making consumer decorators behave like RPC calls with respect to queue management
merging master
Merge branch 'timing' into consumer-ack
added consumer logging, refactored shutdown to clarify code
adding timer decorator
adding timer and tests
adding docs
version
adding option to requeue on error with default false
addressing codereview
Merge pull request #27 from onefinestay/consumer-ack

consumer improvements