* Use `:is` to make important selector option insensitive to DOM order
* WIP
* add `applyImportantSelector` helper
* use new `applyImportantSelector`
* update tests
* remove unnecessary slice adjustment
Not 100% sure.
* update changelog
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Co-authored-by: Adam Wathan <4323180+adamwathan@users.noreply.github.com>
Co-authored-by: Robin Malfait <malfait.robin@gmail.com>