outline or outlines?

[captainbrosset]

We have two outline features in the repo:

https://web-platform-dx.github.io/web-features-explorer/features/outline/
https://web-platform-dx.github.io/web-features-explorer/features/outlines/

The former is about the shorthand outline property only, and is baseline low.
The latter is about the 3 longhand constituent properties, and is baseline high.

It feels odd to have these separate features, I think we should merge them into one.

The feature(s) should also be added to the CSS group.

[jamesnw]

This was separated because of the different support stories, but digging in a bit more, it looks like outline is being held up because no outline method was respecting border-radius, but it only is reflected on the outline data.

I think we should combine them, pin on something besides the shorthand, and see if there's a better way of handling this in BCD data?