IE 11 support

Added un-prefixed touch-action CSS attribute
added un-prefixed PointerEvents event handler hooks
IE11 Support

Added unprefixed touch-action CSS attribute
Added unprefixed pointer events handlers hooks
windows.navigator.pointerEnabled

for backward compatibility reasons, IE11 sets both msPointerEnabled and
pointerEnabled. Changed the order for the test and added 'else if' to
not duplicate handlers on pointer events
Issue #698: Non-async scripts were not executed before Reveal started
Issue #698: Non-async script callbacks are now also called before starting Reveal
Issue #698: Fixed tests
Merge branch 'dev' of https://github.com/theone1984/reveal.js into dev
code format tweaks
remove debug code
when there is data-autoplay:ing media, prolong autoSlide to match its duration #723
Fix for issue #715
Merge branch 'patch-1' of https://github.com/luishgo/reveal.js into dev
remove dev flag from version
include slide number color in theme template
improvement to query string parsing
add example for parallax backgrounds
only run vertical slide setup during startup #726
Merge branch 'dev' of github.com:hakimel/reveal.js
tests for initial section classes
documentation for slide numbers