More aggressive search for power location, keep Virus alive.

Apparently this pattern has a state about 4 ticks in where no two
blocks are direct powerable neighbors... doh! Too lazy to find a new
pattern.
Some formatting fixes to config defaults.
Implement period saving.

The actual code here got tied up in something else, shame on me for not
committing before moving to the next task!
Implement auto-restart of redstone mechanics on chunk load.
Don't repeat the same batch more than once per tick.
Some fixes to simulate.
Implement Virus HUNT mode.
Remove unused and decrepit Targeting library.
Implement messaging when an automata restarts.