Shift registers
OutputExpander experimenting.
hardware folder at dm
Merge branch 'dev' of dm:/src/arduino-docs-mpe into dev

Conflicts:
	hardware/attiny/variants/tiny14/pins_arduino.h
	hardware/attiny/variants/tiny8/pins_arduino.h
Adding empty file
Prototyping temperature guard for soldering iron hack.
Cleaning at dm
Adding a few *.hex files at dm env using in Rules, not cleaning up entirely