Hello,
I think we should add more Rest API functions.
Currently we can only get public rooms, join public room, leave public room, get public room's messages and send a message to public room.

There are some functionalities that can make our life easier, for example:

1. Create private / public room (with option to add members already in the creation)
2. Join non-public rooms
3. Add option to modify room (public / private) - Edit name / descriptions / participants etc..

This functions are very important for our integrations, otherwise we won't be able to integrate to applications.