slidechanged event before "current-fragment" is set

[gabyx]

The reveal-code-focus Plugin issue: bnjmnt4n/reveal-code-focus#20
Is related to the fact that the dispatch of the event "slidechanged" happens before updateFragments() is called, and the current-fragment is at this point is not set in the DOM.

In this way when going to a previous slide, the plugin cannot detect the "current-fragment" which it needs to "focus code"...

Shouldnt it be much better to emit the "slidechanged" after all update functions??