Adafruit-circuitpython-minimqtt

Fixed connecting with an empty username. Thanks flavio-fernandes!

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.

Made `adafruit_minimqtt.adafruit_minimqtt.MQTT()` keyword only to prevent mismatching arguments. This is an API breaking change.

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.

What's Changed
* Issue 126 by jinglemansweep in https://github.com/adafruit/Adafruit_CircuitPython_MiniMQTT/pull/127: handle messages that are a single zero byte.

This may be a temporary fix until we diagnose the problem further.

New Contributors
* jinglemansweep made their first contribution in https://github.com/adafruit/Adafruit_CircuitPython_MiniMQTT/pull/127

**Full Changelog**: https://github.com/adafruit/Adafruit_CircuitPython_MiniMQTT/compare/6.0.0...6.0.1

Updated `is_connected()` to return `True` or `False` depending on connection status, and no longer raises an exception if not connected. This is an API breaking change.

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.

This release fixes an issue that resulted in `timeout` argument being effectively ignored. It also changes the `loop` behavior to have callbacks for all messages in the queue rather than just the first one in the queue. Thank you calcut

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.

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.