- Adjust transcript shortcodes to also support <audio> elements.
- Add audio element shortcode based on <picture> shortcode
- Make <audio> elements match container width.
- Add a11y metadata to transcribed images to communicate the presence of
a transcript
- Fix relative urls in navigation: make them absolute urls, so that the
parsed navigation elements have the correct destinations.
This also switches image transcripts from a section with a heading to a
div with an ARIA label. That should reduce duplication between the
<summary> content and the heading while still being semantically sound.
The site now has polygot markup and can handle both XHTML5 and HTML5
parsing rules. My staging site will be XHTML but my main site will be
HTML5, just in case of parse errors.
If other tools (e.g. LightHouse) end up supporting XHTML5, I'll consider
switching the content-type to XHTML.
- Stop using draft WAI-ARIA 1.3 that isn't supported yet
- Make in-page links focusable across shortcodes/partials
- Replace existing in-page heading anchor links with a more accessible
option.
- Make backlinks aria-labelledby instead of giving them an aria-label,
so they can be translated.
