add support for NoU2 and NoU3

v2.2.1

bump JMotor version

version 2.1.0

v2.1.0

improve RCM BYTE

version 2.0.0

Now supports the RCM BYTE hardware in addition to the original boards.

The code has been significantly changed to hide even more of the framework from the main .ino file.

version 1

Supports RCM boards version 1, 2, and 3.