Adafruit-circuitpython-ssd1306

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-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/en/latest/) for info on how to use it.

Added a power property to be able to tell the whether the display is on or off. Thanks iraytrace!

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

To use in CPython, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/en/latest/) for info on how to use it.

Ported and updated the examples from Raspberry Pi Guy Learn guide. These require CPython.

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

To use in CPython, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/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, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/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, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/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, `pip install adafruit-circuitpython-ssd1306`.

Read the [docs](http://circuitpython.readthedocs.io/projects/ssd1306/en/latest/) for info on how to use it.