Bump version: 0.1.7 → 0.1.8 (+7 squashed commits)

Squashed commits:
[ac5bb36] Bump version: 0.1.8 → 0.1.9
[8acd6b2] ImportException --> ImportError
[ac410a8] matplotlib.pyplot has errors on import, put these in the functions
that rely on them directly.
[f128a20] Bump version: 0.1.6 → 0.1.7
[5866bea] Remove IPython utils.

These are out of date, and have problems on Linux (without a proper
visual backend).
[a519e56] Bump version: 0.1.5 → 0.1.6
[f45aa83] Bump version: 0.1.4 → 0.1.5

SimPEG/Tests.py

@@ -1,5 +1,4 @@
 import numpy as np
-import matplotlib.pyplot as plt
 from numpy.linalg import norm
 from SimPEG.Utils import mkvc, sdiag, diagEst
 from SimPEG import Utils
@@ -311,6 +310,7 @@ def checkDerivative(fctn, x0, num=7, plotIt=True, dx=None, expectedOrder=2, tole
 
 
     if plotIt:
+        import matplotlib.pyplot as plt
         ax = ax or plt.subplot(111)
         ax.loglog(h, E0, 'b')
         ax.loglog(h, E1, 'g--')