Migrate pins from string based to integers #173
Description
We now plan to rely on true gpio numbers, and do away with the string splitting on pin names. Board definitions will need updating, we also suggested having support for arrays of display names, or a way of having multiple definitions for the same gpio pin.
Related branch:
https://github.com/adafruit/Wippersnapper_Protobuf/tree/pins-strings-to-ints