wip integration of HeatmapPathfinding demo
fix collisions by setting worldBounds to match map
flip facing to match direction of travel
Merge branch 'master' into HeatmapPathfinding

Conflicts:
	source/PlayState.hx
tilmap size and player tile index fixes
delete extra traces
wip dither'd fog
2d fog
fog fixed!
larger fog range, initialize map to unseen, and only reveal (never un-see)
Merge branch 'Fog'