Adafruit-circuitpython-wiznet5k

This release:
* https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k/pull/23 Allows an IPv4 address hostname, thanks kevinaj
* https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k/pull/21 Removes bad-whitespace pylint directive, thanks jepler

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

To use in CPython, `pip3 install adafruit-circuitpython-wiznet5k`.

Read the [docs](http://circuitpython.readthedocs.io/projects/wiznet5k/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-wiznet5k`.

Read the [docs](http://circuitpython.readthedocs.io/projects/wiznet5k/en/latest/) for info on how to use it.

This pull request adds:
* https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k/pull/20 Set-able DHCP hostname. Thanks xorbit!
* https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k/pull/20 Configurable DHCP OFFER timeout interval
* https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k/pull/20 Default DHCP timeout increased from 1 second to 3 seconds

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

To use in CPython, `pip3 install adafruit-circuitpython-wiznet5k`.

Read the [docs](http://circuitpython.readthedocs.io/projects/wiznet5k/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-wiznet5k`.

Read the [docs](http://circuitpython.readthedocs.io/projects/wiznet5k/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-wiznet5k`.

Read the [docs](http://circuitpython.readthedocs.io/projects/wiznet5k/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-wiznet5k`.

Read the [docs](http://circuitpython.readthedocs.io/projects/wiznet5k/en/latest/) for info on how to use it.