Nice and all...
....but
I got stuck after I played for a while.
I was able to crouch and enter a space that was 3 blocks high, and 1 block wide with the entrance (1 block high) at the top right. When I fell down there I couldn't get back up since you can't jump while crouched, or crouch while jumping.
No suicide button or any means to restart/reset the room...leaving me no choice but to either restart the game or quit playing.
No wait...quitting the game and then continue worked....I'm now free from the space that trapped me...however...not good to have a space you can't get out from like that =/