Support new :is and :where parsing

[barak007]

Add support for parsing :is and :where as nested-pseudo-classes

[barak007]

@alexander-akait do you accept PR's here?

[alexander-akait]

Should we add :matches()/:any()?

[barak007]

:matches - is renamed to :is and not going to be implemented.
Also :matches is already parsed as nested-pseudo-class... maybe we should remove it someday.
:any - I couldn't find reference to it in the spec and also it currently only works with prefixes so I'm not sure.

[alexander-akait]

https://developer.mozilla.org/en-US/docs/Web/CSS/:is, just worried that someone might use the old names, but they have been renamed

[barak007]

ok.
I added :any and :-vendor-any.
:matches already supported

[alexander-akait]

Thanks

[alexander-akait]

@barak007 Released https://github.com/css-modules/css-selector-tokenizer/releases/tag/v0.8.0