Add COPYING to reflect license headers
Add COPYING to reflect license headers

thiblahute/xdg-app,GeorgesStavracas/flatpak,handsome-feng/flatpak,matthiasclasen/flatpak,chergert/xdg-app,amigadave/flatpak,flatpak/flatpak,flatpak/flatpak,flatpak/flatpak,GeorgesStavracas/flatpak,handsome-feng/flatpak,matthiasclasen/flatpak,alexlarsson/xdg-app,thiblahute/xdg-app,thiblahute/xdg-app,matthiasclasen/xdg-app,thiblahute/xdg-app,handsome-feng/flatpak,chergert/xdg-app,GeorgesStavracas/flatpak,handsome-feng/flatpak,matthiasclasen/xdg-app,amigadave/flatpak,amigadave/flatpak,flatpak/flatpak,chergert/xdg-app,GeorgesStavracas/flatpak,handsome-feng/flatpak,matthiasclasen/flatpak,matthiasclasen/xdg-app,alexlarsson/xdg-app,matthiasclasen/flatpak,alexlarsson/xdg-app,flatpak/flatpak,GeorgesStavracas/flatpak,matthiasclasen/flatpak,alexlarsson/xdg-app,amigadave/flatpak,chergert/xdg-app,matthiasclasen/xdg-app