oleg/reveal.js @ fix/speaker-lightbox-sync

огледало от https://github.com/hakimel/reveal.js.git

Hakim El Hattab 94716f9e51 add support for data-preview-link on any element type (prev only a)		преди 4 месеца
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print	5b537aa8f8 fix slide numbers not visible in pdf exports	преди 1 година
theme	255d55ab8f Merge pull request #3602 from yarikoptic/enh-codespell	преди 4 месеца
layout.scss	e2344787c4 fix r-stack with `grid-template-rows: 100%;`	преди 1 година
reveal.scss	94716f9e51 add support for data-preview-link on any element type (prev only a)	преди 4 месеца