wry@0.39.0

ddda455(#1207) Disable deprecated applicationCache web api. This api was completely removed upstream in webkitgtk 2.44.
d7031ae(#1206) On Windows, fix a crash due to a double-free when the host window is destroyed before the webview is dropped.
34ae1ca(#1202) Add dpi module which is a re-export of dpi crate.
fdbd3d3(#1081) Update http dependency to 1
34ae1ca(#1202) Breaking Change: Removed x, y, with and height fields from Rect struct and replaced it with size and position fields.
c033bd2(#1156) On macOS, fix menu keyboard shortcuts when added webview as child.