Feature Request: Expose method processCss which returns inlined css only

[Warxcell]

Use-case is to be able to use critters inside SSR, by processing only CSS and caching processed CSS - allowing the content to evolve independently from the processed CSS. Something like

let html = .... rendered html in ssr ...
const cacheKey = .... some logic ....
const criticalCSS = getInlinedCriticalCSSFromCache(cacheKey) ?? critters.processCss(html);

html = html.replace('</head>', criticalCSS + '</head>')

This will help also with #78

[kara]

Closing this issue because ownership of Critters has moved to the Nuxt team, who will be maintaining the project going forward. This repo is archived and won't receive any future updates.

If the issue is still relevant, please re-post it to the actively-maintained fork at https://github.com/danielroe/beasties.