Refactor docs

Author: wooorm

readme.md

@@ -40,7 +40,7 @@ node when working with xast (XML).
 ## Install
 
 This package is [ESM only][esm].
-In Node.js (version 14.14+ and 16.0+), install with [npm][]:
+In Node.js (version 16+), install with [npm][]:
 
 ```sh
 npm install xast-util-to-string
@@ -89,7 +89,7 @@ A Christmas CarolCharles Dickens
 
 ## API
 
-This package exports the identifier [`toString`][tostring].
+This package exports the identifier [`toString`][api-to-string].
 There is no default export.
 
 ### `toString(node)`
@@ -112,10 +112,13 @@ It exports no additional types.
 
 ## Compatibility
 
-Projects maintained by the unified collective are compatible with all maintained
+Projects maintained by the unified collective are compatible with maintained
 versions of Node.js.
-As of now, that is Node.js 14.14+ and 16.0+.
-Our projects sometimes work with older versions, but this is not guaranteed.
+
+When we cut a new major release, we drop support for unmaintained versions of
+Node.
+This means we try to keep the current release line, `xast-util-to-string@^2`,
+compatible with Node.js 12.
 
 ## Security
 
@@ -163,9 +166,9 @@ abide by its terms.
 
 [downloads]: https://www.npmjs.com/package/xast-util-to-string
 
-[size-badge]: https://img.shields.io/bundlephobia/minzip/xast-util-to-string.svg
+[size-badge]: https://img.shields.io/badge/dynamic/json?label=minzipped%20size&query=$.size.compressedSize&url=https://deno.bundlejs.com/?q=xast-util-to-string
 
-[size]: https://bundlephobia.com/result?p=xast-util-to-string
+[size]: https://bundlejs.com/?q=xast-util-to-string
 
 [sponsors-badge]: https://opencollective.com/unified/sponsors/badge.svg
 
@@ -215,4 +218,4 @@ abide by its terms.
 
 [xss]: https://en.wikipedia.org/wiki/Cross-site_scripting
 
-[tostring]: #tostringnode
+[api-to-string]: #tostringnode