Fixed an issue where functions returning improper responses where not being error handled correctly. The error handing method now returns the path name of the function with the issue. Thanks dannystaple!
To use in CircuitPython, simply install the [Adafruit CircuitPython Bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-wsgi`.
Read the [docs](http://circuitpython.readthedocs.io/projects/wsgi/en/latest/) for info on how to use it.