Palette changer for ComputerCraft 1.8 and later

chpal <path> Change palette to the palette in path.
chpal --export <path> Exports the current palette to path.
chpal --reset Resets the palette to the default ComputerCraft palette.
The palette format chpal uses is a limited version of the .Xresources format.
An example palette entry is *.color0: #000000.
The only criterium for an entry is *.color<n>: #<hex>.
You can find examples of this in the palettes directory.
pacpal shows an image with all the colours, so you can get a quick look of all the colours.
