Start to update docs for spectral/Spectral change
change spectral to nipy_spectral, leave spectral as alias, update docs
align nipy_spectral_data, double backquotes
Properly passing on horiz-/vertOn to Cursor()

Simple fix to properly pass on the horizOn and vertOn keyword
arguments to the matplotlib.widgets.Cursor constructor.
Improve empty collection check in add_collection.
Add test for add_collection
Typo in docstring.
Only set 'consider' if no value was supplied.
Fix bug in _auto_legend_data which caused the vertex list to always be empty.
Fix bug in helper function which prevented the legend from avoiding vertices.

This bug was not triggered before because count_contains() was never
called due to the empty vertex list in Legend._find_best_position().
Add TODO note about marker extents and vertex overlaps.
Typo in docs.
Fix test failure (caused by corner case in np.concatenate).
Add new test for automatic legend placement to check that vertices are indeed taken into account.
Add FIXME comment.
Also use 'loc=0' in 'test_various_labels' to further test the new code.
Fix USE_FONTCONFIG == True mode.
Implemented fix to issue 196 on github for log=True and histtype='step'
fixed the minimum specification in ax.hist as per @WeatherGod's comment;
only want to set min this way if log is specified.  Also, added case for
normed vs not
Use numpy.min