**Potentially breaking release**
The set_digit_raw function was originally implemented incorrectly and this fixes the behavior. If you have used it, you may need to update your code.
To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).
To use in CPython, `pip install adafruit-circuitpython-ht16k33`.
Read the [docs](http://circuitpython.readthedocs.io/projects/ht16k33/en/latest/) for info on how to use it.