Adafruit-circuitpython-mcp230xx

What's Changed
* digital_inout.py: add exceptions when ipol register is absent by regicidalplutophage in https://github.com/adafruit/Adafruit_CircuitPython_MCP230xx/pull/60

New Contributors
* regicidalplutophage made their first contribution in https://github.com/adafruit/Adafruit_CircuitPython_MCP230xx/pull/60

**Full Changelog**: https://github.com/adafruit/Adafruit_CircuitPython_MCP230xx/compare/2.5.14...2.5.15

**Full Changelog**: https://github.com/adafruit/Adafruit_CircuitPython_MCP230xx/compare/2.5.13...2.5.14

Changes: https://github.com/adafruit/Adafruit_CircuitPython_MCP230xx/compare/2.5.12...2.5.13

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

To use in CPython, `pip3 install adafruit-circuitpython-mcp230xx`.

Read the [docs](https://circuitpython.readthedocs.io/projects/mcp230xx/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-mcp230xx`.

Read the [docs](https://circuitpython.readthedocs.io/projects/adafruit-circuitpython-mcp230xx/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-MCP230xx`.

Read the [docs](http://circuitpython.readthedocs.io/projects/MCP230xx/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-mcp230xx`.

Read the [docs](http://circuitpython.readthedocs.io/projects/mcp230xx/en/latest/) for info on how to use it.