Made sure pickling use protocol 2 to make it faster and the files smaller (binary).

workflows/go_workflow.py

@@ -160,7 +160,7 @@ class DatasetSaveFunction(Function):
 
         try:
             if chooser.run() == gtk.RESPONSE_OK:
-                cPickle.dump(data, open(chooser.get_filename(), "w"))
+                cPickle.dump(data, open(chooser.get_filename(), "w"), protocol=2)
                 logger.log("notice", "Saved data to %r." % chooser.get_filename())
         finally:
             chooser.destroy()