MQTT 3.1.1 support for each client (C, Java, JavaScript and Python).
JavaScript API exerciser.
The OASIS standard version of MQTT, version 3.1.1 will be nearing completion at the time of this release. The libraries will be able to connect to both 3.1 and 3.1.1 servers.
The client libraries only have messages for debug information (trace) and errors (exceptions). None are internationalized at this point.
Java - JDK 1.4.2 and above
C - Linux, Windows and Mac OS/X. Can also be called from C++
JavaScript - standard web browsers. Node.js is not supported.
Python - Python 2.7, 3 and above.
MQTT 3.1.1 support
Bug triage and fixing