v5.3.3

Fixes found getting ready for launch, and the project's new terms.

5.x is the stable line. From the first launch video until four weeks
after it, releases are patch-only and batched at most weekly — no syntax
changes and no breaking changes.

License

• WebFluent is MPL-2.0, no longer GPL-3.0. Changes to WebFluent's own
  files stay open; using it in a closed product is fine. The sites, PDFs and
  slide decks you build with it are yours, under any license you choose.

Fixes

• No empty second page. A PDF shorter than one page came out as two:
  the baseline's body { min-height: 100vh } was measured against the paper
  while the engine laid out inside the margins. The body is the flow that
  runs across pages, so a minimum height no longer applies to it.
• wf render with no data renders with none. Without --data it read
  standard input regardless, so it waited on the keyboard, and an empty pipe
  was "Invalid JSON data". Nothing piped in, or an empty pipe, is now {}.
• A responsive layout in a template. wf render and the Template API
  wrote a responsive prop's rules (Grid(columns: { base: 1, md: 3 })) but
  not the class that applies them, so the layout stayed at its narrowest.
• A page's .html address. With build.clean_urls: "file", opening
  contact.html (or contact/index.html) by its own address drew the 404
  page once the router loaded. It now shows the page, and the address bar
  reads /contact.
• A06 ("Link has no text content") counts text a for, if, show or
  match draws inside the link, and an aria-label.

The project

• One home: every link points at https://webfluent.monzeromer.dev.
• A gallery of real outputs at /showcase, rebuilt on every release.
• examples/videos/, the projects the launch videos are recorded from,
  built in CI.
• A PDF benchmark against headless Chrome, bench/pdf/RESULTS.md, run with
  just bench-pdf.
• A test that fails if the previous major version is named as current.

Full Changelog: v5.3.2...v5.3.3