Reverted 3 commits:
Revert "Change version number to 2.0.3-experimental"
Revert: 54c171dc2a.
Revert "Experimental support for sequence number validation in the publisher (#401)"
Revert: 592499f7bc.
Revert "Support Validating Records are From to the Expected Shard (#400)"
Revert: 01f5db8049.