This release truly fixes the python cssbeautifier installation and updates cssbeautifier cli to use the same general code as jsbeautifier.

Also, as of this release Node.js 8.x is no longer guaranteed to work. Node.js 8.x LTS reached end-of-life in January 2020.
Parts of our test infrastructure no longer support Node.js 8.x. The js-beautifier should still run on Node.js 8.x, but it is not part of the CI system and so not guaranteed to work.