matplotlib/matplotlib — pull request #1271 by jkseppan (2012-09-17 20:01:52+00:00)
Title: Set axis limits in test_stackplot

On Travis, the autoscaling was choosing a y limit of -10 instead of 0
because some data values came out at -2.3e-18 instead of zero.

Some discussion at https://github.com/matplotlib/matplotlib/issues/1248