Optimize CSS Assets Webpack Plugin

A Webpack plugin that searches for CSS assets during the build and optimizes/minimizes them using cssnano by default. It solves the CSS duplication problem when using extract-text-webpack-plugin. The latest version is 6.0.1, but it is deprecated for webpack v5+ in favor of css-minimizer-webpack-plugin. It supports webpack v4 and above, with v4+ requiring webpack v4. Release cadence is low; maintenance mode.