Comment 2 for bug 1407970

I added python-numpy and python3-numpy to Build-Depends and that significantly dropped the skips. Some of the remaining skips depend on python-uncertainties but that is in universe so we'll continue skipping those. Here's the merge proposal with the updates:
https://code.launchpad.net/~corey.bryant/ubuntu/vivid/python-pint/0.6/+merge/245755