Download extra dependencies

[wSedlacek]

I am looking at using this project however I am considering using Liquid Web Components which have their own tailwind preset.

https://liquid.emd.design/liquid/guides/tailwindcss-integration/

Ideally I wouldn't need to use npm to download their package. Although it wouldn't be as simple as just using unpkg since their preset has a few dependencies itself.

Maybe SwiftyTailwind could just invoke npm for me instead of downloading the bin from the GitHub releases? I'm down for any other ideas to make this ergonomic.