Change log:
7b5f385 Upgrade dependencies
a521a78 GH-1424: Abort delivery on ProducerFencedException
bb1c279 Fix manual acks with transactions
fc949fe GH-1414: ConcurrentMLC Fix ConcurrentModification
f9a7e4f GH-1382: RetryingBatchErrorHandler
e148db5 GH-1400: Expose topology from StreamsBuilder
