# 0.6.0 Added analog_read/analog_write
# 0.5.0 Added Pcf8591 mudule (ADC/DAC)
# 0.4.0 Added Software Tone PWM functions wrappers
# 0.3.0 Added Software PWM, added instructions for libws281x, but not enabled
# 0.2.0 Added PWM pin control functions
# 0.1.0 Added GPIO basic functions: read and write
# 0.1.0 Added Pcf8591 module to setup pins