Use PEP-8-suggested double space between class definitions in surface.py.

diff --git a/pypiezo/surface.py b/pypiezo/surface.py
index 6461718cb45506817eff7828e080d6540375edf2..7bf5d1ba3738a826f633984b1bbac40a8c0fcefd 100644 (file)
--- a/pypiezo/surface.py
+++ b/pypiezo/surface.py
@@ -60,6 +60,7 @@ class FlatFit (PoorFit):
             left_slope, right_slope)
         super(FlatFit, self).__init__(msg)
 
+
 class EdgeKink (PoorFit):
     def __init__(self, kink, edge, window):
         self.kink = kink