Added version and usage to master.sh and worker.sh.
Improved logging of master/worker.
Fixed Mutator to use its own id in ModIds it makes.
Ordering.splice now actually removes mods from Datastore, decreasing our memory leaks.
Parizer now asks the Master to schedule new tasks, so that we can take advantage
multiple Workers.
Merge branch 'master' of https://github.com/twmarshall/tbd into devjinggao
master port 2555 workers 2556+