Primarily: fixed the gmsh module to use integer indices

also did some pep8/pyflakes cleanup

test/baker2d.py

@@ -75,7 +75,6 @@ class Test(unittest.TestCase):
         R, R_q = (self.all_points[:size_of_simplex],
                                  self.q[:size_of_simplex])
 
-
         answer = baker.interpolate(self.X, R, R_q)
         good_answer = Answer(qlin=0.5, final=None, error=None, abc={})
         self.assertEqual(answer, good_answer)

test/quadratic2d.py

@@ -3,7 +3,6 @@
 import unittest
 
 from interp.baker import interpolate
-from interp.grid import grid
 from interp.grid import contains