QSWorker is a QueueItemHandler now.
adding some json conveniences, rename QSWorkerBuilder to QSAssemblies for less namespace collision.
Increment minor version, this is not compile compatible with the previous version 0.2.1
Didn't mean to rename AbstractQueueItemHandler param names (only meant to in worker)
Inadvertent rename of QSTaskModel.handler to worker. Change back
move to latest jres 0.1.8
0.3.0 release, QSWorker API alignment with QueueItemHandler interface
increment to 0.3.1-SNAPSHOT