Revision history for RPi-DigiPot-MCP4XXXX

2.36.1  2017-01-22
        - WiringPi::API 2.36.3 and RPi::WiringPi::Constant 0.02 are prereqs
        - added technical specifications
        - MocK::Sub now a TEST_REQUIRES
        - added _bytes(), returns aref of bytes to send to SPI
        - added set(), sets the output of the potentiometer(s)
        - added shutdown(), shuts down the potentiometer(s) per the datasheet
        - added tests for the base functionality, and bit manipulation