Add support for "font-variation-settings" (variable fonts)

[phun-ky]

Although font-variation-settings is WD, I'm wondering if I can either a) suppress attribution specific warnings, or b) get a fix that recognizes font-variation-settings as a valid syntax.

Stylint: 0 Errors.
Stylint: 1 Warnings.
Warning: property is not valid
File: .../search.styl
Line: 409: font-variation-settings "wght" 400

(I'm getting the same type of error for grid-gap)

[koynoyno]

Add

"customProperties": ['grid-gap', 'font-variation-settings'],

line to your .stylintrc file.