A maubot that lets users publish alternate aliases in rooms.
By default, the bot will let users add any alias where the localpart is the same as any existing
published alias. Optionally, room admins can use !altalias allow to specify custom regular
expressions to define what aliases are allowed.
!altalias publish <alias>- Publish an alternate alias for the room.!altalias allow <regex>- Add a regex for matching allowed alternate aliases.!altalias allowed- View allowed regexes.