julianduque/johnny-five — pull request #2 by lyzadanger (2014-07-09 02:04:59+00:00)
Title: Piezo API and Tempo changes

Right at the boundaries of my git fu at the moment; I hope I got this right. Quite a festival of `cherry-picking` and hand-resolving conflicts.

I wrote a few more tests for the new callback parameter on `play` tonight as well.