non-existent image test should now pass
Add version field and version check to tests.
Add fixes to test_Pychrm.py from colettace/wnd-charm

https://github.com/colettace/wnd-charm/commit/a9f2c4865a9c3a2fda0e32dcac75d748c99c68c3
Backwards compatibility with older numpy versions

Replace np.testing.assert_allclose with assert_almost_equal
Use unittest2 for Python<2.7
Skip test on Python 2.6 (collections.OrderedDict not available)
Use np.testing.assert_almost_equal instead of map
Merge pull request #7 from manics/wndcharm_test_fixes

Wndcharm test fixes