image-set() should be listed on ricg.io

[grigs]

We should be tracking image-set() and also making sure that image-set() inherits the newer srcset features.

While it hasn't been part of our focus in the past, I'd like to make sure we don't lose track of it again. And one way to do it is to make sure that it is listed as one of areas we're looking at on the ricg.io page.

[Wilto]

+1—we were talking about that in the IRC channel the other day.