Changes

• Add support for line number offsets in Markdown code blocks. Read the docs (@flowolf #3409)
• Significantly speed up livereload (@t-fritsch #3446)
• Add support for links to the id of an element nested inside slide (@t-fritsch #3444)
• Adds ability to override Markdown plugin default options (@t-fritsch #3443)
• Allow theme subfolders (@t-fritsch #3442)
• Refactored Markdown plugin to use let/const and strict equality (@grgprarup #3454)

Fixes

• Auto-slide duration falls back on global setting autoSlide instead of using first fragment auto-slide (@hakimel)
• When a fragment sets data-autoslide, all fragments of the same index will now use the same auto-slide timing (@hakimel)
• Fix code block auto-animate bug that caused unmatched lines to appear without fading in (@hakimel)
• Fix livereload when using root CLI param (@t-fritsch #3441)
• Fix scss watch tasks broken on syntax error (@t-fritsch #3445)
• Fix typos in variable names (@individual-it #3453)
• Fix code blocks font when printing pdf (@t-fritsch #3457)
• Fix dracula's theme list-style on sub-items (@gildasio #3450)
• Fix dracula li markers (@t-fritsch #3464)

Full Changelog: https://github.com/hakimel/reveal.js/compare/4.5.0...4.6.0