HDR canvas and CSS API reviews (TAG and implementers)

Thank you everyone for the productive call last night!

I have filed a TAG review for the proposed APIs at:
https://github.com/w3ctag/design-reviews/issues/1194

I also filed a Mozilla review at:
https://github.com/mozilla/standards-positions/issues/1359

And a WebKit review at:
https://github.com/WebKit/standards-positions/issues/618

I also encourage any further log-vs-linear thoughts here:
https://github.com/w3c/ColorWeb-CG/issues/129
My personal feeling is that the version in the specification are the best
compromise.

See everyone in 2 weeks on February 26.