This release has refactored the library into a package and added a new type of Button the SpriteButton which can use TileGrid inflation to make more arbitrary looking buttons that have more complex visuals than just solid color + outline.
To use in CircuitPython, simply install the [Adafruit CircuitPython Bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-Display-Button`.
Read the [docs](http://circuitpython.readthedocs.io/projects/Display-Button/en/latest/) for info on how to use it.