Adafruit-circuitpython-circuitplayground

We have upgraded Pylint checks to use the latest version of Pylint and implemented usage of Black Python formatting. This does not change the functionality of the code - it is designed to bring it up to current standards and make it more readable.

* Remove pinned Pylint version number from build.yml file
* Synced `.pylintrc` file to match Adafruit standard
* Ran upgraded Pylint and applied any changes or new disables necessary
* Ran Black formatter and allowed application of changes across entire repo

For more information on using Pylint and Black on your code, check out [this guide on working with Pylint and Black](https://learn.adafruit.com/improve-your-code-with-pylint)

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).

To use in CPython, `pip3 install adafruit-circuitpython-circuitplayground`.

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

Raise NotImplementedError if attempting to use non-Express features on Circuit Playground Express with Express module.

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).

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

This release includes:
* Migrating this repository from Travis to GitHub Actions. This has no effect on the behavior of the code itself.
* Many examples have been updated
* Some documentation changes

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).

To use in CPython, `pip3 install adafruit-circuitpython-circuitplayground`.

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

THIS IS A BREAKING CHANGE FOR THE UPDATED EXAMPLES - all updated examples use the new import type now, and therefore require the latest version of the library. However, all previous code will continue to work as-is.

You can now `from adafruit_circuitplayground import cp` and it will detect whether you are using a Circuit Playground Express or Circuit Playground Bluefruit and import the appropriate module.

REQUIRES LATEST CHANGES TO CIRCUITPYTHON TO USE ON CIRCUIT PLAYGROUND EXPRESS. Always update to the latest CircuitPython.

Both `from adafruit_circuitplayground.express import cpx` and `from adafruit_circuitplayground.bluefruit import cpb` still work, so all previous example code will continue to work with the updated library.

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).

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

This release includes a complete refactor of the Circuit Playground library to now include support for Circuit Playground Bluefruit!

No changes required to continue using the library with Circuit Playground Express.

To use with Bluefruit:
`from adafruit_circuitplayground.bluefruit import cpb` then you can access all the features, for example the temperature would be accessed using `cpb.temperature`.

Also includes two new features for Bluefruit: `sound_level` and `loud_sound`. Check out the docs for more information!

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).

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

Thanks to dcbriccetti for the new Advanced examples!

Thanks to deshipu for the `were_pressed` property!

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).

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