This release:
* Patches broker hostname issue (https://github.com/adafruit/Adafruit_CircuitPython_MiniMQTT/issues/25) requiring broker URL starting with HTTP/HTTPS. Drops dependency for URL prefix.
* Removed `try/except` block which improperly handles IP address strings
* Removed module's `TCP_Mode`/`TLS_Mode` constants in favor of using the interface's `TCP_Mode` or `TLS_MODE`.
* Updated examples to reflect above updates
* Updated `_cellular` and `_ethernet` examples to use MQTT, unencrypted (port `1883`) broker ports.
To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-minimqtt`.
Read the [docs](http://circuitpython.readthedocs.io/projects/minimqtt/en/latest/) for info on how to use it.