3.9.90
  * Complete UI redesign based on GNOME3 (Allan Day, John Stowers, Alex Muñoz)
  * Allow updating extensions from inside tweak tool (Alex Muñoz, 696948)
  * Show text in tooltip when label is ellipsized (Robin Stocker, 704149)
  * Reluctantly make window resizable (Robin Stocker, 704149)
  * Specialized ui for certain tweaks
  * Tweaks can depend on other tweaks being enabled
  * Add XSettings related tweaks (middle mouse paste, appplication menu)
  * Add startup application management
  * Offer to logout user when tweaks require the session restarted 
  * Better tweak names and descriptions (manage our own translations
    instead of getting all from gsettings)