Feature Request: Whitelist all rules from a file

[MrToph]

It would be so much easier if I could whitelist all rules from a file instead of having to specify the rules individually.

My usecase is that I have a prism.css code highlighting theme that defines custom rules for tokens.

[MrToph]

As a work around I added that CSS file as content and use a custom extractor. Actually works pretty well.

[kenberkeley]

+1