Merge pull request adafruit#49 from askpatrickw/patch-1

Adafruit Logging is required

Merge pull request adafruit#46 from 2bndy5/remove-loop_forever()

adjust fixed_header init; (-) loop_forever()

Merge pull request adafruit#47 from 2bndy5/master

payload parameter of type `None` replaced with zero-length string in `will_set()`

Merge pull request adafruit#44 from 2bndy5/master

api doc's param & code-block display correctly

Fixed discord invite link

Merge pull request adafruit#42 from brentru/variable-headers-large-pa…

…yload

Fix publishing large payloads (>127 bytes)

Merge pull request adafruit#41 from brentru/example-fix

Fix import path in examples

Merge pull request adafruit#38 from brentru/on-message-enhancements

Add Topic-specific message callbacks

Merge pull request adafruit#36 from brentru/fix-lwt-issues

Fix LWT Issues

Merge pull request adafruit#34 from brentru/update-fona-lib

Updated Cellular Examples