We experienced simultaneous entity updates on the same entity from different clients hence different Uow's, because ConcurrentModificationCheck Concern had no read/write lock.
The ordinary lock concerns kick in far to late to prevent entity state version korruption.
Introduced lock functionality to ConcurrentModificationCheckConcern t…
…o prevent simultaneous updates of the same entity.
Merge pull request #11 from arvidhuss/develop
Introduced lock functionality to ConcurrentModificationCheckConcern
Reviewed by Rickard and Niclas.