Initial testing of bit array
Have a rough version of checking if a row is full via bit mask. Still need to improve, and come up with a way to do bit masks for shifting some rows down.
Got bit masking/shifting working for deleting a row. Need to clean it up and start actually using the bitgrid for collision detection.
Collision detection now uses bitgrid. Now I need to clean up the implementation.
Using bit grid for more. Started cleanup, but not quite done with that yet. Continue with that as I start messaging system.
Merge pull request #6 from jcbrock/bitgrid

Bitgrid