- We now handle the :chat-modified event from whatscl, and re-fetch group
metadata when we receive it.
- Of course, this doesn't actually help for resources which are in the MUC at
update time; they'll need to reconnect until we have code to handle message
stubs properly.
- Chat metadata reception now generates a message to the user, both for ease of
debugging, and also to let them know that something happened to a groupchat
they're in which they would otherwise not be aware of at all. (A handy link is
also provided, if you missed the invite and want to join a MUC you're not in.)
- The new `refresh-chats` admin command forces a refresh of all group metadata
in one big go. (Also, the help text now displays the current version.)
