Adafruit-circuitpython-tca8418

What's Changed
* update show to root_group by FoamyGuy in https://github.com/adafruit/Adafruit_CircuitPython_TCA8418/pull/14


**Full Changelog**: https://github.com/adafruit/Adafruit_CircuitPython_TCA8418/compare/1.0.11...1.0.12

Fixed the circup installation instructions. Thanks FoamyGuy!

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

To use in CPython, `pip3 install adafruit-circuitpython-tca8418`.

Read the [docs](https://circuitpython.readthedocs.io/projects/tca8418/en/latest/) for info on how to use it.

Changes: https://github.com/adafruit/Adafruit_CircuitPython_TCA8418/compare/1.0.9...1.0.10

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

To use in CPython, `pip3 install adafruit-circuitpython-tca8418`.

Read the [docs](https://circuitpython.readthedocs.io/projects/tca8418/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-tca8418`.

Read the [docs](https://circuitpython.readthedocs.io/projects/adafruit-circuitpython-tca8418/en/latest/) for info on how to use it.

This release corrects a link to the learn guide tutorial that is in the documentation pages. Thank you adam-huganir.

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

To use in CPython, `pip3 install adafruit-circuitpython-TCA8418`.

Read the [docs](http://circuitpython.readthedocs.io/projects/TCA8418/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-TCA8418`.

Read the [docs](http://circuitpython.readthedocs.io/projects/TCA8418/en/latest/) for info on how to use it.