1.3.1 (C++ client)
https://github.com/eclipse/paho.mqtt.cpp/releases/tag/v1.3.1
Patch for improper Version constants in 1.3.0 source.
#462 Fix version constants for version v1.3.x
https://github.com/eclipse/paho.mqtt.cpp/releases/tag/v1.3.1
Patch for improper Version constants in 1.3.0 source.
#462 Fix version constants for version v1.3.x