Added DrawScreen function so that buffer address doesn't need to be passed all the time, and updated demo apps and games
Added subtile font sizes as first pass at arbitrary image sizes
Added support for padding to 8x8 tiles for fonts, which allows arbitrary dimensions for fixed-width fonts up to 8x8 (need to add larger than 8x8 support still), and changed preview display to match LCD
Added bounded textbox function back into LameGFX
Created really amazing TextDemo; updated text commands in TankBattle