Move firmware to a subdirectory

Make room for Open Pixel Control tools
Warning and indentation cleanup
Start stripping down the Teensy libraries

Originally I wasn't planning on doing this, but since I need to reclaim some RAM anyway, might as well just start hacking out everything we don't need...
More cleanup & simplification
Remove binary.h
Rename OctoWS2811, to clearly indicate that this version is modified
Zero-copy modifications for OctoWS2811