This release removes the wsgi server file which was erroneously left existing but empty with the last release. Thank you dhalbert.
To use in CircuitPython, simply install the [Adafruit CircuitPython Bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-esp32spi`.
Read the [docs](http://circuitpython.readthedocs.io/projects/esp32spi/en/latest/) for info on how to use it.