Fix Default MAC For Initialization Error

To use in CircuitPython, simply install the Adafruit CircuitPython Bundle.

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

Read the docs for info on how to use it.

What's Changed

• match cpython recv timeout behavior. new httpserver example by @FoamyGuy in #125

New Contributors

• @FoamyGuy made their first contribution in #125

Full Changelog: 5.0.5...5.0.6