matplotlib/matplotlib — pull request #1406 by neggert (2012-10-15 23:15:38+00:00)
Title: Fix bug when stacking histograms with non-integer weights (v1.2.x branch)

Same as #1372, but rebased onto the v1.2.x branch.

Fixes #1370.

Also run boilerplate.py to update pyplot.py with correct signature for hist.