This is a bugfix release. The important changes are fixing the `on_log()` callback in the Python module and the `log_dest` option when running as a Windows service. The rest of the fixes are documentation and build script fixes. Downloads are available on the [download page] and include all supported binaries (except for Ubuntu packages which are still waiting to build due to Launchpad maintenance). The Python module has been uploaded to [Python Package Index]. # Broker * Fix default `log_dest` when running as a Windows service. # Client library   * Fix incorrect parameters in Python `on_log()` callback call. Fixes bug #1036818. # Clients * Clients now don't display TLS/TLS-PSK usage help if they don't support it. # Build scripts * Fix TLS-PSK support in the CMake build files. * Fix man page installation in the CMake build files. * Fix SYSCONFDIR in cmake on \*nix when installing to /usr. Fixes bug #1036908. # Documentation   * Fix mqtt/MQTT capitalisation in man pages. * Update compiling.txt. * Fix incorrect callback docs in mosquitto.py. Fixes bug #1036607. * Fix various doc typos and remove obsolete script. Fixes bug #1037088. [download page]: /download [Python Package Index]: http://pypi.python.org/pypi