masayuki0812/c3 — pull request #274 by bjlbernal (2014-05-27 19:56:33+00:00)
Title: Arc of Gauge to expand on mouseover

I noticed that the mouseover effect of expanding and contracting was not happening with the arc gauge. I thought it was working before, and I don't know if it was taken out on purpose or left out during the refactoring of the arc portion of the code. Here is a fix that is structured the same way the donut and pie chart options work.