- memory: individual entity cache can be deleted
- plugin XEP-0045: nick change are now detected and userChangedNick signal is sent instead of joined/left
- plugin XEP-0045: leave implementation
- frontends: userChangedNick signal management
- Primitivus: an alert is shown in notification bar in case of error in sendMessage
- added getUniqueRoomName method to create a room with no name conflict (need improvment)
- if the room is new, the basic configuration is used to create it
- _join is now used for bridge, and join can be used if we need the deferred
- a trigger is added when a user join a room ("MUC user joined")