Run yapf on Spline UI

Change-Id: Id09023a4e651fd041ea5acc9814e441780307336
diff --git a/frc971/control_loops/python/spline_graph.py b/frc971/control_loops/python/spline_graph.py
index f6e3a0c..6303769 100755
--- a/frc971/control_loops/python/spline_graph.py
+++ b/frc971/control_loops/python/spline_graph.py
@@ -7,6 +7,7 @@
 import cairo
 import basic_window
 
+
 class GridWindow(Gtk.Window):
     def method_connect(self, event, cb):
         def handler(obj, *args):