feat(utils/matches): support selectors level 4 :not and :is #2742
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Been wanting to do this for awhile now so decided to take some time to do it. We can now support the Selectors Level 4 :is pseudo selector (which allows us to simplify some heading selecting) and allows :not to support more than one selector, which also helps us shorten and simplify selectors.
Since we use
utils/matches
for everything and we don't go through the DOM selector API, we don't have to worry about browser support since we match everything virtually.