Add drag and drop section to spec
Add drag and drop section to spec

tulcod/wayland,tulcod/wayland,eyolfson/wayland,abooij/wayland,giucam/weston,abooij/wayland,xorgy/weston,eyolfson/weston,bitfactor/wayland,giucam/weston,jonnylamb/weston,udoprog/weston,Fantu/compositor-spice,Gnurou/weston,tulcod/wayland,kwm81/weston,mchalupa/wayland,mchalupa/weston,sir-murray/wayland,Tarnyko/weston-xdg_surface_present,Tarnyko/weston-xdg_surface_present,krezovic/weston,udoprog/weston,sir-murray/wayland,mchalupa/wayland,Fantu/compositor-spice,bitfactor/wayland,sir-murray/weston,kwm81/weston,eyolfson/wayland,mchalupa/weston,abooij/wayland,mchalupa/wayland,bitfactor/wayland,jonnylamb/weston,Fantu/compositor-spice,eyolfson/weston,sir-murray/weston,xorgy/weston,krezovic/weston,Gnurou/weston,eyolfson/wayland,sir-murray/wayland