Adafruit-blinka-displayio

This release includes the following changes:

* Tilegrid class variables are copied to local variables to avoid possible race condition

To use in CPython, `pip3 install adafruit-blinka-displayio`.

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

This release includes the following changes:

* Tilegrid now checks that objects are going to show up onscreen before attempting to draw them.

To use in CPython, `pip3 install adafruit-blinka-displayio`.

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

This release includes the following changes:

* Added fill_row to Display class. Thanks FoamyGuy.

To use in CPython, `pip3 install adafruit-blinka-displayio`.

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

This release includes the following changes:

* Finished Adding Backlight Control

To use in CPython, `pip3 install adafruit-blinka-displayio`.

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

This release includes the following bug fixes:

* Fixes a bug with negative positioning of tilemaps

To use in CPython, `pip3 install adafruit-blinka-displayio`.

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

This release includes the following bug fixes:

* Fixes an issue that was occurring when a zero width or height bitmap was passed in

To use in CPython, `pip3 install adafruit-blinka-displayio`.

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