Fix for issue #16
Non-concurrent jobs support in persistent store
Fix issue #16 - 9ci#16
can you help me understand what this does? does the jdbc store require GrailsArtefactNonConcurrentJob with a @DisallowConcurrentExecution?
At least JDBC job store (JobStoreTX) checks for annotation on Job classes whether it should be concurrent or not.
It doesn't affect RAM job store as I remember.