Adafruit-circuitpython-wiznet5k

This release contains a fix for the simpleserver example to allow it to receive more than one connection and message. A CPYthon client example that works with simpleserver has been added as well. Thank you e28eta

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 release has refactored the CNAME lookup code and resolved issues with looking up certain types of domains. Thank you BiffoBear!

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 release fixes an issue that resulted in an infinite loop when using the NTP module in the library.

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 release renamed several constant variables to have a leading underscore so they can be optimized further by mpycross and other tool. Thank you BiffoBear

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 release includes error handling improvements during the DHCP process.Thank you BiffoBear!

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.

Substituted assert statements for exceptions, allowing for use of the `-O` flag while compiling to `.mpy`. Thanks bill88t!

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.