was playing around with different signage for block mass.  Also, fixed the button hitbox problem.  Turns out rotating an object doesn't actually rotate the hitbox, so I just made different sprites for each button.  It's probably less computation that way too (right?)
added some more animations to the hand (grapple extending, jumping).  It seemed fun, so I took out the constraint on the hand's spin while it jumps, now it always does metroid style jumps.