Major changes in 0.10

• Fix critical in file chooser
• Add options to screenshot portals
• Add screencast and remote portal implementations

$ sha256sum xdg-desktop-portal-gtk-0.10.tar.xz 
637bbc17e02e2f076a750a8175f8936227de044099d1b1be163490419a899263  xdg-desktop-portal-gtk-0.10.tar.xz