is unavailable (for example running in a gamescope session)
* Do not show the launch window while instantiating the application. This
probably was causing numerous issues because it was running outside of
the applications event loop. This also fixes the exit button on the login
dialog requiring `sys.exit()` to quit Rare. Now it goes through the
proper cleanup procedures.
* Make slot and signal names more uniform
* Fix a problem with RareCore connecting RareGames to the same signals
multiple times when the library was refreshed.