Adding attributes
Merge pull request #266 from APriestman/develop

Adding attributes
Only run hash db unit test once. Added a re-opening test.
Fix issue that prevented re-opening a hashDB that was concurrently open in SQLite3 at the same time.
Fix a reversed short-circuit eval conditional and remove recently commented-out code.
Comment out part of the reopen test since its failure cause is unknown at this point.
Merge remote-tracking branch 'upstream/develop' into develop