Fixed a bug related to calculating the checksum that would cause various failures for some functionalities. Thanks ajiekurniawansaputra!
To use in CircuitPython, simply install the [Adafruit CircuitPython Bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-fingerprint`.
Read the [docs](http://circuitpython.readthedocs.io/projects/fingerprint/en/latest/) for info on how to use it.