- Change internals to use `adafruit_register` for register and bit-field read/write
- Updated table of constants, including fix BusADCResolution values (Issue5), add new values
- Add new properties to access registers (advanced API)
- Update i`na219_simpletest.py` to show some usage of the new properties
To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).
To use in CPython, `pip3 install adafruit-circuitpython-ina219`.
Read the [docs](http://circuitpython.readthedocs.io/projects/ina219/en/latest/) for info on how to use it.