What is the problem you're trying to solve?

I would like me and my colleagues to be able to use edge-of-your-seat new features to CSS. Sometimes features are not known to Stylelint yet and it would be nice if developers wouldn't have to disable linting for a few lines in the meantime.

What solution would you like to see

To reproduce:

$ npm pack styled-jsx@3.2.4
npm notice
npm notice 📦  styled-jsx@3.2.4
npm notice === Tarball Contents ===
npm notice 6.1kB  dist/.DS_Store
npm notice 599B   dist/_constants.js
npm notice 22.3kB dist/_utils.js
npm notice 8.2kB  dist/babel-external.js
npm notice 46B    babel-test.js
npm notice 753B   dist/babel-test.js
npm notice 41B    babel.js
npm notice 10.4k

Can we have numeric values allowed for tokens like fontWeights, zIndices, linHeights`, etc?
Example: https://codesandbox.io/s/stitches-ts-issue-forked-voh43?file=/src/stitches.config.ts

Recently @devrnt opened up a PR to improve the setup with a theme(#189) and I realised that it'll be awesome to have that section expanded for each case.