matplotlib/matplotlib — pull request #729 by tonysyu (2012-02-29 17:18:43+00:00)
Title: Fix error when multiple densities passed to streamplot.

Right before the `streamplot` PR was accepted, I made a last-minute change that broke `streamplot` when separate x- and y- densities are specified.

Also, added demo of unequal densities for `streamplot` as a test.