Upgrades tailwindcss to latest stable (v3.0.24), creates a build
pipeline for tailwind.min.css (as of 3.x there is no more dist, files
have to be created by users), switches from loading from UNPKG to
hosting locally.
BREAKING CHANGE: tailwindcss version bumped from v1.9.6 to v3.0.24,
customization using deprecated functions will not work anymore
Updates: #15
f-dinucci