mod_muc_rtbl: also filter messages This was a bit tricky because we don't want to run the JIDs through SHA256 on each message. Took a while to come up with this simple plan of just caching the SHA256 of the JIDs on the occupants. This will leave some dirt in the occupants after unloading the module, but that should be ok; once they cycle the room, the hashes will be gone. This is direly needed, otherwise, there is a tight race between the moderation activities and the actors joining the room.

---
summary: Lets users create and join roster groups
---

Introduction
============

This module lets you join groups using an ad-hoc command. When a user
joins a group, everyone in the group is added to their roster, and they
are added to the rosters of existing members.

TODO
====

-   Leaving groups
-   Add a roster group/tag when adding roster items (tricky with current
    rostermanager API)