Change log:
c7eb283 Upgrade Spring Versions
01c9bba GH-1168: Fix sendOffsets in local transaction
15ab184 GH-1145: Backport NPE Fix
1171c00 GH-1134: Fix stop(Runnable) usage
96352b1 Upgrade Jackson
5950d62 GH-1066: Protect against null Headers
fa9cfa8 Fix close producers after a rebalance
f88cd9f Remove coment for Java bug since it is not anymore
8792bb3 Fix URL to SI Idempotent Receiver
6568be7 URL Cleanup
8e72b70 URL Cleanup
f8ade49 URL Cleanup
167a029 Add gateway links in SIK chapter
69cefe6 URL Cleanup
8947f49 Remove unused import
fe84fed Fix ConcMLContMockTests for current code base
2a708ba Fix ErrorHandler for Consumer Errors