Fixed bad quiver transforms.
Fixed failing test on travis.
Don't snap pcolor
Attempt at updating the pickle image test.
TST : test `plot(.., color='none')`

added failing test for issue #2760
BUG : make `plot(..., color='none')` work again

Fixes #2760

Fixes miss-handling of color conversion logic introduced in edc48f0
Merge pull request #2761 from tacaswell/fix_line_color_handling

Fix line color handling
Make it possible to control snapping from the outside.
Merge pull request #2726 from mdboom/pcolorsnap

Don't snap pcolor
changed the text of INSTALL to be correct about what external
dependencies you need to install on windows.
modified triplot returned value
Scipy2013 Sprint: Cleaning F/C example

I cleaned the F/C example as suggested in the Scipy 2013 sprint. I had
the help of @leouieda on this.

For more information, please see #2181.
TST : eventplot empty event list

test for eventplot not raising an exception
BUG : allows empty event lists to be passed in

fixes #2786
colors unsorted
ENH: Added remove methods for legends in figure and axes objects
TST: Added tests for remove of legends on figure and axes objects
Merge pull request #2787 from tacaswell/empty_event_loop

Empty eventplot.
Merge pull request #2774 from tacaswell/windows_installdoc_tweak

Changed the text of INSTALL to be correct about external dependencies for Windows.
Merge pull request #2781 from GBillotey/return_triplot

Triplot returns the artist it adds.