The MS-Git notifications wreck havoc on my CRM, but I got notices of stuff happening.
In the hubot-xmpp repo (mirror/hubot-xmpp - hubot-xmpp - allthe.codes), they are talking about OMEMO support in a different JS library called xmpp.js(mirror/xmpp.js - xmpp.js - allthe.codes), or rather a separate plugins add-on repo (mirror/xmppjs-client-plugins - xmppjs-client-plugins - allthe.codes). The plugins cover a few different XEPs: