let BatsEverywhere draw CritterGroups
PlayerMotion: Edited so it switches between constant values instead of
multiplying/dividing by 3 when you press/release Shift. Thus I got rid
of the crashing bug. 
BatsEverywhere: in main(), Shift bug comment removed. Also made controls
text description so it's not editable after it's established
Merge branch 'master' into catsrabbits
made critters turn faster upon hitting a boundary of town