feat(stylesTask): keep unminified CSS for dist build

The `styles` task now not only generates a `dist/[component-name].css`
that contains minified CSS, but also a `dist/[component-name].min.css`
file that has the actual minified CSS. The `dist/[component-name].css`
file now contains the unminified CSS so that we're able to deliver both,
minified and unminified, CSS in our distribution builds.
chore: releases 0.2.0