Adafruit-circuitpython-midi

* `ALL_CHANNELS` is removed.
* Setting in_channel to "ALL" still works but will return a tuple of 16 ints instead of "ALL"
* All in channels are captured by default now. The previous setting `None` crashed.

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

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

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

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-midi`.

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

Thanks to foozmeat for the fix!

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

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

Read the [docs](http://circuitpython.readthedocs.io/projects/midi/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.

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

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

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

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

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

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

Thanks to kevinjwalters for the contribution!

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

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

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