Test Suite for Camille's Interphones
Depends on pigpio https://github.com/joan2937/pigpio/ to start pigpio type sudo pigpiod in the terminal
button-pigpio for testing switches matrix-keypad for testing matrix keypads
for the Trellis Keypad, use Adafruit's Trellis Library: https://github.com/tdicola/Adafruit_Trellis_Python