signals: whitespace fixes

overviewer_core/signals.py

@@ -20,6 +20,7 @@ the ability to be intercepted, which lets Dispatchers re-route signals
 back to the main process.
 """
 
+
 class Signal(object):
     """A mechanism for registering functions to be called whenever
     some specified event happens. This object is designed to work with
@@ -93,6 +94,7 @@ class Signal(object):
     # force pickled signals to redirect to existing signals
     def __getstate__(self):
         return self.fullname
+
     def __setstate__(self, fullname):
         for attr in dir(self.signals[fullname]):
             if attr.startswith('_'):