feature request: support for Picoborg reverse and Diablo motor control boards

[Supermagnum]

They both communicates ower a I2C bus, that is very useful and handy if used in combination with a pair of SparkFun Differential I2C Breakout - PCA9615 ( 3,3V DC power is sent by normal ethernet cable ), as it can be used to keep the number of wires down.

The Picoborg reverse handles up to 5A per stepper motor, the Diablo 55A output per motor .

Link to Picoborg reverse:
https://www.piborg.org/motor-control-1135/picoborgrev

Arduino library:
http://forum.piborg.org/downloads/picoborgrev/PicoBorgRevArduino.zip

Diablo:
https://www.piborg.org/motor-control-1135/diablo

Arduino library:
http://forum.piborg.org/sites/default/files/forum_upload/piborg/DiabloArduino_0.zip