novus/nvd3 — pull request #271 by Marsup (2013-09-16 16:59:44+00:00)
Title: Fix scatter single point class removal

Hi,

I encountered this bug when the linechart was fed with a single value, and then updated it with more.
The nv-single-point class would stick and the linechart would have visible dots all over it.
I think it's the correct way to fix it but I have a doubt whether I should apply the class to `g` or something else, so advice welcome.