* add `@headlessui/tailwindcss` plugin
* expose `data-headlessui-state="..."` data attribute
All components that expose boolean props in their render prop / v-slot
will receive a `data-headlessui-state="..."` attribute.
If it exposes boolean values but all are false, then there will be an
empty `data-headlessui-state=""`. If the current component is rendering
a `Fragment` then we don't expose those attributes.
* use tailwindcss in `playground-react` and `playground-vue`
We were using the CDN, but now that we have the
`@headlessui/tailwindcss` plugin, it's a bit easier to configure it
natively and import the plugin.
* ensure to build the `@headlessui/tailwindcss` package before starting the playground
* refactor `listbox` example to use the @headlessui/tailwindcss plugin
* update changelog
* bump Tailwind CSS to latest insiders version
* correctly generate types
* type `tailwind.config.js` files for playgrounds
* add todo for when `:has()` is available
Robin Malfait