bsm/sarama — pull request #4 by ORBAT (2014-10-13 16:25:01+00:00)
Title: Add exported method for forcing a consumer group rebalance

I added a `ConsumerGroup#ForceRebalance()`method to allow forcing a rebalance. This allows the next call to `ConsumerGroup#Process()` to resume at a manually committed offset (when e.g. the last `Process()` didn't successfully process all the events it got)