- 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.
- give code blocks their own figure numbers/names/ID
- Split figcaption into quotecaption and codecaption
- create codefigure partial to reduce markup for SoftwareSourceCode
figures
