Enemy Boat is pretty bompin'

Doesn't need too much more work to get it going, so we can end up using
them pretty soon.
Merge pull request #31 from leafdj/master

Enemy Boat is pretty bompin'
Crap Enemy Boat was breaking the build

Sorry, commented out the offenders.
ALSO: Bullet sprites are only rotating propery to the right of the
player, the left diagonals leave the bullets pointing the wrong way. At
least with keyboard shooting.
Merge pull request #32 from leafdj/master

FIX THE BUILD. FIX THE BUILD.
cache fix