expose stats_cb#55

Merged

edenhill merged 7 commits intoconfluentinc:masterfrom

hqin:stats_cb

Nov 2, 2016

Commits on Oct 26, 2016

Commits on Oct 27, 2016

fixes based on pull request review feedback
hqin
committed

Commits on Oct 28, 2016

Commits on Nov 2, 2016