Creativecontrol-circuitpython-ltc166x

Added and tested all examples.
Added ReadTheDocs documentation.

Added DAC chain support functions and new examples for

- single value
- single value sweep
- DAC value list
- DAC value list with selective updates
- DAC chain value lists

Initial Functional Release.

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

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

Initial PYPI release candidate

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

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

Added PYPI integration.

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

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