Compared to version 1.0.0, Cumulus4j 1.0.1 brings the following:
Bugfix: A Heisenbug which happened solely with optimistic transactions was fixed.
Compatibility: There was a change in DataNucleus' plug-in API from version 3.0.0-release to version 3.0.1. Cumulus4j 1.0.1 is now compatible again with the newest DataNucleus versions (see compatibility matrix).