This is a repo to explore, and hopefully define a way to maintain aspect ratio
... see issues, we should end up with a few here ...
Jonathan Kingston already has a decent proposal here for it to work in CSS: https://jonathankingston.github.io/logical-sizing-properties/#propdef-aspect-ratio
We discussed this issue at TPAC, here are the minutes: http://www.w3.org/2016/09/21-respimg-minutes.html