Updated to work in both CP 5.x and 4.1
Fixes issue with CP 5.x:
- wait_for_refresh() and refresh_soon() replaced with refresh(target_frames_per_second=60)
- As a fallback in 4.1, it uses old behavior
To use in CircuitPython, simply install the Adafruit CircuitPython bundle.
Read the docs for info on how to use it.