Added boolean to check whether a pixel is black
Added actual collision detection with center pixel against any black
pixels. Next, move starting position for testing.
adding collisionmap for testing
Collision detection works. Added test.png for obvious purposes.
cleaning up
Merge branch 'master' into Collisions
Remy added some changes to master, Collisions got behind.
Moved collision detection logic into collisions.rkt. Added more bitmaps
for nefarious reasons.