master
new approach to handling browsers not allowing media with audio to play, reveal.js will now play videos muted and show an unmute button in the lower left
fix and format examples decks
fix bad imports in examples, add codespell skip list to action
placekitten.com -> placecats.com (closes #3848)
data-preview-link value now takes precedence over anchor href #3854
fix math rendering in md examples
merge in master