Documentation versioning

[kcubero27]

Currently, when I look for specific util, I go to TailwindCSS and look for it.
However, this task becomes very tedious when the version of my project is not the last one. Therefore, I'm not able to see the utilities for that version and it could happen that I struggle to add a utility that my current version doesn't support.

I think it would be super useful to have documentation where users can filter by a specific version. A good example of it is React Apollo