SciTools/iris — pull request #1210 by rhattersley (2014-06-27 08:55:27+00:00)
Title: Isolate pandas plotting side-effects.

Importing pandas [messes with matplotlib's date formatting](http://stackoverflow.com/questions/13988111/importing-pandas-in-python-changes-how-matplotlib-handles-datetime-objects). This PR reverts that side-effect so (sections of) the test suite can be executed in any order with consistent results.

Also see pydata/pandas#2579.