open new file when dropped on window

0061-on.quit

@@ -1,6 +1,5 @@
 on.quit = function()
 	if Global_next_save then
 		save_graph_to_disk()
-		Global_next_save = nil
 	end
 end

0064-on.file_drop

@@ -0,0 +1,11 @@
+on.file_drop = function(file)
+	if Global_next_save then
+		save_graph_to_disk()
+		Global_next_save = nil
+	end
+	Filename = file:getFilename()
+	if file_exists(Filename) then
+		load_graph_from_disk()
+	end
+	A()
+end