At rule param case

[bartlangelaan]

Which issue, if any, is this issue related to?

Closes #38.

Original bug report:
stylelint/stylelint#4560

Is there anything in the PR that needs further explanation?

This makes sure that parameters of at-rules are untouched, and not converted from or to other casing styles.

All examples use 'glamorous' but it looks like, just as mentioned in the issue, the usage of camelCase is just wrong and should always be kebab-case. I have created a new test that makes sure that this works from now on, with a comment why this needs to be tested.

This merge request is dependent on #40 - which means, that merge request needs to be merged before this one.

[jeddy3]

Thank you! Feel free to merge after you merge #40 in.

[abdonrd]

Thanks @bartlangelaan!

[jeddy3]

@bartlangelaan & @abdonrd I've given you both admin access to this repository.

You're welcome to merged pull requests as you see fit, as well as organise the repository, ci, release, etc however you like. In the stylelint organisation, we're trying to remove bottlenecks and barriers to getting contributions merged and released by better distributing permissions. I can also add you both to the stylelint npm organisation so that you can publish this package, just let me know in the private team discussion what email address to use.

Regardless of whether you accept the invitation or not, I wanted to say thank you for contributions to this package so far!

[abdonrd]

Thanks @jeddy3! I can try to help a bit in the repository, but I don't have much knowledge of how Stylelint works internally.

[jeddy3]

I can try to help a bit in the repository,

Thank you!

I don't have much knowledge of how Stylelint works internally.

The original author of this package (and postcss-syntax, which you dipped into in stylelint/stylelint#4800 (comment)) is no longer active, so you probably know as much as anyone else!

[abdonrd]

@bartlangelaan can you rebase the PR please? Thanks!