Release 13.9.0

[jeddy3]

• stylelint release
• stylelint-config-recommended update/release
• stylelint-config-standard update/release
• stylelint-demo update
• stylelint.io update
• tweet

Happy New Year everyone! I hope you all had an enjoyable festive season, despite the pandemic.

I'm catching up on stylelint things. It's been a while since our last release. There is a fix in head and a couple of pending pull request we should try to get out.

• Fix false negatives for css-in-js object notation in color-hex-case #5101 is in need of a second review (it's a lovely step towards migrating some of the older rules to use the value parser)
• Properly set the errored property for --report options #5079 is ready to merge, if the author or one of the reviewers can do that

Quite a few pull requests are waiting on the author, and we can let those sit if changes aren't made it time:

• Add support for a TAP formatter #5062
• Add ignoreFunctions: [] to length-zero-no-unit #5082
• Catch rule execution exceptions #5012
• Fix false positives for flex shorthand with 2 values in length-zero-no-unit #5024

Shout out to @vankop, @malsf21 and @hudochenkov for reviewing some of these older pull requests.

I'll try to make time to look at #5089 as it's based on a suggestion I made.

I think the workaround in #5019 is viable. Shall we merge that?

Although #5044 has two reviews, I haven't merged it yet as I need to dig deeper into if unreferenced dashed-idents are a thing.

[jeddy3]

Thanks for getting #5079 in.

We just need another review on #5101, and then I'll release.

[Sultanidze]

I've just commented on #5024, please review.

[clinejj]

I believe #5062 should be ready for a second approval as well, I don't think there's further action from the author (me)

[jeddy3]

With #5101 now merged, I'll try to make time for a release this evening.

[jeddy3]

Done 🎉

Thank you to everyone who contributed to this release!