[csswg-drafts] [css-images] Should the values of image-orientation include the <angle> variants? (#4164)

smfr has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-images] Should the values of image-orientation include the <angle> variants? ==
In https://drafts.csswg.org/css-images/#the-image-orientation there's a Note that says that 

> This property is likely going to be deprecated and its functionality moved to HTML. At minimum, it will likely lose all but its initial value and from-image.

Is that still true? Issue #3799 talks about the default value, but not what other values are available.

What are the use cases for <angle> with optional flip?

Also, why is 'image-orientation' missing from css-images-4?

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/4164 using your GitHub account