- MinGW support coutesy of @kimim
- CMake improvments courtesy of @hobbes1069
- Fixed keep alive ping time compliance courtesy of @ziron4
- Fixed bug in UNIX PAL that caused MQTT_ERROR_SOCKET_ERROR
- Added simple CI tests
- Converted #ifdef to #if defined coutesy of @yamt
- Custom pal template coutesy of @yamt
- Fixed build compatibility with -Wc++-compat flag coutesy of @NoelGraf
Other contributors: @alvin1221, @Willieodwyer, @gc87