FSE 100 Build

Cleaned up and ready to test.
Added reset button to reinitialize the maze and the robot, and stop
execution.
Added custom robot sprite. (rip in pieces red box) Should be easy enough
to add per-theme robot sprites, and even animate them.
New folder titled 'Release Builds'-- included in there should be a ZIP
file and everything you need to run the program via the .jar file.