XEP-0258 security label support
XEP-0258 provides support for providing security labelling for military and high-security commercial environments, such that individual messages may be labelled in order to indicate processing controls on them.
The patch attached provides XEP-0258 support for Gajim.
It is missing the logging of these messages - this requires a log database schema change, which I wanted to discuss in the community before approaching.