Changes in 1.8.0

• filechooser: Return the current filter
• screenshot: Fix cancellation
• appchooser: Avoid a crash
• wallpaper: Properly preview placement settings
• wallpaper: Drop the lockscreen option
• printing: Improve the notification
• Translation updates

$ sha256sum xdg-desktop-portal-gtk-1.8.0.tar.xz 
a52529ed321e044ca9adca5e9718d9ba57c414a2634dd4109df344c5b9eed77f  xdg-desktop-portal-gtk-1.8.0.tar.xz