Added images
working with subsampled image.
Added in code for subsample by 2 drawing of images.
Various hacks and tweaks for making the RRR work.
Made it so a hardcoded temp can be used. Saves on lots of TWI data/progmem issues
RRR support all ready to go out the door.
Tidy/integrate code after successful RRR.

Various changes pulling in more clenaly things that were hacked to make
the RRR work.
Subsampling.
Merge branch 'master' of https://github.com/brodykenrick/gratis