- Python 3:
  - icons besides menus
  - remove "if gobject" ->
    - gtk -> Gtk
    - gdk -> Gdk
    - Gtk3 constant names
    - etc.
  - X-Plane on Linux and Windows
  - streamline distribution (remove unnecessary stuff)
  - make the windows smaller, if possible
  - check some colours on Windows (e.g. the tab background)
  - flightexplain: why is it higher initially
  - eliminate initial resize