Production CSS is not minified/obfuscated

Created by: AdityaAnand1

While using global stylesheets with component classname props as usual, building for production leads to the same exact classnames still being used.

My best guess is that there would be significant css bundle size reduction if the (production only) build process were to include any of the popular css minification tools.

https://github.com/css/csso https://github.com/fmarcia/UglifyCSS https://github.com/matthiasmullie/minify

Reproduction steps should be pretty straightforward, include a typical stylesheet into a component and use it, then build and inspect the result in devtools.