More light system work. Light values are actually being calculated correctly.
I have no idea why units aren't appearing when visible, however.
Merge branch 'master' of https://github.com/mrunderhill89/CMPS179-ByGloveAndDagger
Added a re-center camera feature (press "Home" to reset), as well as a (non-working) idiot check
for neighboring units.
New SWF.
Merge branch 'master' of https://github.com/mrunderhill89/CMPS179-ByGloveAndDagger

Conflicts:
	src/unit.as