The `AdafruitRadio` advertisement class was moved to https://github.com/adafruit/Adafruit_CircuitPython_Radio. One bug was also fixed. Because the API changed incompatibly, this is a new major version.
To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-ble`.
Read the [docs](http://circuitpython.readthedocs.io/projects/ble/en/latest/) for info on how to use it.