v5.3.0

What a search engine and a link preview read, said in full by the build —
so a site needs no step after wf build to be found, shared and fast.

Who the site belongs to

• meta.owner: "person" publishes the site under a Person instead of
  an Organization: the WebSite's publisher, and on a personal site
  every WebPage's about. job_title is the person's jobTitle;
  same_as lists their profiles elsewhere.
• meta.owner_details adds any other schema.org property to that node
  as written — alternateName, email, worksFor, alumniOf,
  knowsAbout, logo. What the node is (@type, @id, name, url) and
  what other settings write (jobTitle, sameAs) are refused (E111).
  Values are escaped for the <script> block they sit in.

The sharing card

• og:image:width and og:image:height are read from the image when
  it is in public/.
• og:image:alt and twitter:image:alt from a page's image_alt: or
  meta.image_alt.
• og:locale is written as Open Graph reads it (en → en_US,
  en-GB → en_GB), with an og:locale:alternate for each other locale.

Addresses that do not redirect

• build.clean_urls. A static build writes /contact as
  contact/index.html, and a host such as GitHub Pages answers /contact
  with a 301. "file" also writes contact.html; "directory" names
  every route /contact/ — canonical, og:url, sitemap, breadcrumbs and
  every link to a page — so the canonical address is never one that
  redirects.

Files asked for early

• meta.preload lists files on the site to fetch with the page: each
  is a <link rel="preload"> in every head, ahead of the stylesheets, as
  from its extension, and crossorigin for a font. A font a project .css
  file's @font-face names no longer waits for styles.css to arrive. A
  path on another origin is E111.

Where a page may send requests

• meta.connect names the origins a page may send requests to besides
  its own — an API on another domain, an analytics endpoint — as the
  policy's connect-src: https://api.example.com, or
  https://*.google-analytics.com for a domain's subdomains. Until now the
  policy left a page only its own origin, with no way to widen it. An entry
  with a path, or a keyword, is E111.

The documentation site

• Moves to webfluent.monzeromer.dev. It was still built for the
  /WebFluent base path, so its internal links and search index 404'd.

Full Changelog: v5.2.0...v5.3.0