Fixed bug in readTextFromFile(File) of class Main.
Changed WorldCanvas(int, int, int, int) constructor to use GameConstants
tile width and height values, instead of them being passed in.  The
constructor is now WorldCanvas(int, int).
Changed Player constructors to use Player art and CollisionBox
automatically.
Finished level loading code!
Removed old Image reading debug code.
Changed readTextFromFile(File) to use and actual linefeed "\n" instead
of a slash and n "/n".
Fixed Slime art oath.
Finished testing, debugging, and creating the level loading code.
Puzz Blocks class now loads external level.
Updated Puzz Blocks Dev Log.