Adafruit-circuitpython-simpleio

Thanks to brentru for the great work!

add an example and also allow float's for tone() frequency, rearrange to be less memory intensive on PWM pins

Thanks to mrmcwethy for the great work!

* Fix `shift_out` so that it actually toggles the clock. Thanks to profbrady
* Fix `simpleio` on boards without `audioio`. Thanks to ladyada

Full change list [from 0.3.0](https://github.com/adafruit/Adafruit_CircuitPython_Register/compare/0.3.0...0.3.1).

To use in CircuitPython, download the .mpy file and copy it to the `lib` folder on the `CIRCUITPY` drive. Or, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/simpleio/en/latest/) for info on how to use it.

* Adds Servo to simplify interfacing with servos. Thanks to brentru
* Adds `tone` to match its Arduino counterpart `tone`. Thanks to brentru

Full change list [from 0.2.0](https://github.com/adafruit/Adafruit_CircuitPython_Register/compare/0.2.0...0.3.0).

To use in CircuitPython, download the .mpy file and copy it to the `lib` folder on the `CIRCUITPY` drive. Or, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/simpleio/en/latest/) for info on how to use it.

* Removes `NeoPixel` in favor of the separate [NeoPixel library](https://github.com/adafruit/Adafruit_CircuitPython_NeoPixel).
* Adds `map_range`, `shift_in` and `shift_out` to match their Arduino counterparts `map`, `shiftIn` and `shiftOut` respectively. Thanks to asherlie and brentru for them!

Full change list [from 0.1.3](https://github.com/adafruit/Adafruit_CircuitPython_Register/compare/0.1.3...0.2.0).

To use in CircuitPython, download the .mpy file and copy it to the `lib` folder on the `CIRCUITPY` drive. Or, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/simpleio/en/latest/) for info on how to use it.