Updates for v5, supporting stylelint v16

- Set minimum stylelint version to be v16.0.0
- Set minimum node version to be 18.12.0 to match ...

We no longer support node 14/16 and we're pure-esm so we can use the
latest versions of these pa...

Bumps the dev-dependencies group with 11 updates:

| Package | From | To |
| --- | --- | --- ...

* Add Astro test

* Add astro components to parser blocklist

* Add endIndex when reporting issues

This allows formatters and editor plugins to show the ra...

Bumps [semver](https://github.com/npm/node-semver) from 5.7.1 to 5.7.2.
- [Release notes](https...

* Consistent formatting in fixture config

* Reenable svelte test and fix parser inference for...

* Update devDependencies

* migrate to eslint-plugin-n

Minimum supported Prettier version is v3.0.0
Minimum supported stylelint version is 15.8.0

-...

* v3 changes

- Drop support for node 12
- Run tests using stylelint v15
- Update recommende...

chore: remove double word "the"

Version 2 - Drop support for old stylelint / prettier / node versions

We can't use the one from jest-preset-stylelint as it doesn't yet let
you pass in the codeFilena...

We're now targeting >2, where resolveConfig and getFileInfo are always
present

Technically our source code continues to work in v14 but v14 made
changes to how non-css syntaxe...

Bumps [tmpl](https://github.com/daaku/nodejs-tmpl) from 1.0.4 to 1.0.5.
- [Release notes](https...

prettier already takes care of formating these whole files, so skip
them, just like js/markdown...

* Add testing with Prettier v2 to test matrix

* Add endOfLine:auto to test harness configs

...

Stylelint doesn't always report errors in the same order. Avoid that
breaking tests by only chec...

Use Github Actions for CI

If you're using Prettier v1.19 then this will include any parsers
overrides you've defined in yo...

Correct EOL handling for UNIX and Windows

Tests added.

Make sure we don't explode on Vue and css-in-js solutions

Make it clearer that we read .prettierrc by default.
Tweak "recommended" instructions

Report parsing errors instead of crashing

Minimum supported stylelint version remains at 9.2.1, but 9.5.0 is needed
for unit testing this

Fix error when calling stylelint with --syntax and --fix

Prior to this commit setting an explicit syntax when autofixing would
cause a crash as we were a...

Omit `severity` for removing the warning from prettier

Use the helper package directly instead of eslint-plugin-prettier

This allows you lint contents from stdin without using the --stdin-filename
option

Simplify installation instructions