add compatibility for AudioOut API changes in CP 3.x

adafruit / Adafruit_CircuitPython_RTTTL

Play RTTTL tunes in CircuitPython

MIT License

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Closed idcrook closed 6 years ago

idcrook commented 6 years ago

added sys import since that is what is used for version detection
added updated sample generation for 3.x AudioOut.play()
- .play(loop=False) (2.x) -> .play(sample, *, loop=False) (3.)
updated audioio.AudioOut() constructor to be 3.x compatiible

idcrook commented 6 years ago

Verified to work on both CP 3.x/libs and CP 2.x/libs on CPX 😄