1. HTML5 semantic elements

    HTML5 offers some new elements, primarily for semantic purposes. The elements include: `section`, `article`, `aside`, `header`, `footer`, `nav`, `figure`, `figcaption`, `time`, `mark` & `main`.

  2. audiodecoder api: configure

  3. audioencoder api: configure

  4. videodecoder api: configure

  5. videoencoder api: configure

  6. html element: figure