Off Now! A button press to immediately turn off sounds & NeoPixel lights (CircuitPython School)

We'll modify the code we wrote at the end of the Alarm! lesson so that we can immediately turn off NeoPixel lights and audio output when a button is pressed. We'll learn about audio.stop() and additional ways to leverage return values passed between functions.
Part of Prof. Gallaughers CircuitPython university course: bit.ly/circuit...