alancnet/slides @ 2dce8db49148ae0e3d7f2a191fba50e51c4a5a88

Hakim El Hattab c3da106363 rename 'linear' background transition to 'slide'		13 éve
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reveal.js	eb5b39e685 support for background transition overrides	13 éve
reveal.min.js	c3da106363 rename 'linear' background transition to 'slide'	13 éve