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* Add compatibility with Raspberry Pi 5 (auto-selection of correct gpiochip
device)
* Add ability to override gpiochip selection; see :ref:`gpio_chip`
* Convert bouncetime -666 to :data:`None` (bug compatibility, which also
ensures this should work with GPIO Zero's rpigpio pin driver)
* Fix ``pull_up_down`` default on :func:`setup`
* Fix changing ``pull_up_down`` of already-acquired input
* Ensure :meth:`PWM.stop` is idempotent