Merge pull request #88 from mreiferson/debug_88

consumer: fix discovery behavior delegate
consumer: add DisconnectFromNSQD functionality
Merge pull request #91 from mreiferson/remove_addrs_91

consumer: ability to disconnect from nsqd
conn: re-use delegate struct
conn: don't spam draining cleanup log messages
Merge pull request #89 from mreiferson/debug_89

various improvements
bump v1.0.1 stable
docs: add some missing method docstrings
Adds basic connection/message stats retrieval for Consumers, with tests