Fix #84: Typo in direction list
Fix #82, fix #81: Workarounds for NPEs

Still no idea what's causing these, logging more data.
Switching to hashsets internally because I've been meaning to and why
not?
Refactor - Fix #82, #81 for reals

Change lists of coords to lists of objects. This removes a lot of code,
removes a lot of instanceof checks, removes tons of getTileEntity calls
and makes things generally a ton cleaner.
Fix #60: Proper amount of fast radiation as heat rises
Reverting fast radiation fix. Too nerfy.

Will restore in 0.3 with better cooling tools.
(0.2.13A) Version bump
Fixing changelog again
Merge remote-tracking branch 'origin/master' into dev