+Cache surfaces that are opened via shm_open inbetween updates.
+Send configure event when a window is moved and no client
+Handle implicit grabs when in broadway-server.c
+Rewrite events (per-client serials, etc)
+keyboard focus handling
+Add resize handling to js WM
+Make canvas/title non-selectable in browser
+Handle browser window size changes
+_gdk_broadway_server_has_client is always FALSE, so resize don't work
+Send reset events on client disconnect (button up, normal state. Maybe grab state reset?)
+rgba suport
+shift-select in gedit doesn't work
+backdrop mode