Intermediate committ for pull operations. Still buggy.
All broken, in process of refactoring worker.
Further simplified the AkkaWorker.

Still not functional, but getting there.
New worker still dysfunctional.
Still buggy.
Fixing postfix ops warning.
Started to revamp termination detection.
New termination detection and worker implementation pass tests.
Fixed bug in new termination detection, workers start out as idle now.
Reducing precision requirement and signalThreshold to speed up some tests.
Implemented pull operations for workers. Fixes issue #85.