These will be integrated into the code shortly..

This gets basic comms working and setunset working as well...  It
makes the LED blink!

This can now easily be expanded to support other projects as well..

This is better than using RAM, as it keeps the state between power
cycles...

Turns out there's a bit of code that isn't compatible w/ the Python version,
eliminate it...  This was to support encoding lengths (via negative length
parameters)...

Also, the default C version (which we want to use) is Keccak(800) and not
Keccak(1600), switch Python to 800, as it'll be faster on the 32-bit uC, and
still has plenty of security margin...

git-subtree-dir: strobe
git-subtree-split: 66b501fdde