Fixs:
    * Call sync after each POST, after send a message for example
    * Add mentions tab with a search of the username
    * Ignore launched threads when changing room...
    * Sort rooms by last message or fav?

Functionality:
    * Set topic
    * Set room avatar
    * Set room name
    * Register
    * Room creation
    * Change user display name
    * Change user avatar
    * Show media messages (images / videos)
    * Send media messages (images / videos)
    * Store last read message to show differently

Events to manage:
    * Join / leave from current user
    * Invite event
    * Join / leave in room

Other stuff:
    * Set the app name correctly to show in the shell topbar

Encription:
    https://matrix.org/docs/guides/e2e_implementation.html