SVG Score Extensions

This document describes the SVG extensions that are written and read by the latest versions of my Assistant Composer and Assistant Performer software.
It is being tracked in the Assistant Performer's GitHub repository at

The relevant definitions are now kept at Moritz' GitHub repository. See:
The list of all CSS classes that Moritz can write, together with their nesting information.
Moritz' issue #7: The current 'score' namespace definition.
Moritz' issue #6: The current <score:midi> definition