You can now configure if you want to Rollback, Commit or just close when a query only transaction commits

The default is now to ROLLBACK (was defaulting to just use close on read committed isolation level)

So ROLLBACK is now the default and you can specify which one of the three options you want.

## Rollback is now the default
#ebean.transaction.onqueryonly=ROLLBACK
#ebean.transaction.onqueryonly=CLOSE
#ebean.transaction.onqueryonly=COMMIT

People may wish for more performance by choosing "CLOSE" mode when using Read Committed Isolation level.