* Keyboard interconnect using two uarts
* Supports daisy chain addressing using a master/slave direction communication scheme
- Still needs more testing
- Functions have been tested alone to be generally working
Check for dfu-util and screen before using them. Also aborts if
teensy_loader_cli compilation fails.
Uses the type builtin to determine if a command exists. See here:
https://gist.github.com/sdelmas/7377271
