* Fix to make sure ctrl+c is honored during a want read/write case.
* Fix the firmware update example to properly synchronize publish and use a unique topic name.
* Improve multi-thread test message to use larger size (> tx but) and in test mode check for actual message.
* Improve remote test done logic.
* Only run GitHub CI for PR's, not local push.
* Properly set `WOLFMQTT_NO_EXTERNAL_BROKER_TESTS` for each test.
* Use cat for logs, not more.
* Fix for multi-threading case where packet_obj of wrong type could be used.
* Fix to allow multi-threaded example when non-blocking build option is enabled.
* Added message when `mqtt_check_timeout` triggers timeout.
* Added extra timeout for test scripts because 1 second is too small to give enough time in all cases (1.9-2.0 seconds is seen as a 1 second change).
David Garske
Eric Blankenhorn