More formatting.
Removed some more crap from the repository.
Yet more formatting.
Even more formatting.
More formatting.
Yet again, formatting.
Lots of changes to speed up the go engine.

It is much faster. Unfortunately, it doesn't quite work right now. My plan
is to next add approximate scoring for a full board, then use that for the
monte-carlo simulation instead of the heuristic we were using before.
Made it even faster.

The control maps won't work at all, and I'll need to add those back
eventually, but the game runs really fast (especially relatively) right
now. On a related note. It would be really nice if std::vector,
std::unordered_map, et all didn't allocate.