Merge pull request #15 from lamestation/master

update
[kuroneko] deprecated Box and FillScreen methods, ClearScreen now takes colour parameter
[kuroneko] apply changes for ClearScreen(colour)

- SerialPortTest is seriously out of date
[kuroneko] apply changes for ClearScreen(colour)
[kuroneko] DrawMapRectangle, WIP
[kuroneko] DrawMapRectangle, WIP
[kuroneko] DrawMapRectangle, WIP
[kuroneko] DrawMapRectangle, comment updates
[kuroneko] TankBattle: use DrawMapRectangle
Changed from British to American spelling of 'color'
Removed 'PUB null' from library objects because accidentally loading a library as a top-level object has no consequences on the system.
Removed clkmode/xinfreq settings in LameAudio