hack in a normal force to keep player on slopes
buggy implementation of jumping off slopes
fix warning show condition (only show if had more than one)
also, re-add requiredTorques to player prefab. Ugh, when did this get
clobbered?
finish first pass of level 5; jumping off slopes still somewhat buggy; inconsistent behavior
make level3 point to level4
tidy; move PlayerState out of BoxyControl
Added some hacks to make getting perma stuck on slopes more difficult