broadcasting fragments state in multiplex plugin (#394)
removed no longer required helper method
support for transition speed settings (closes #392)
simplified getCurrentFragmentIndex impl
returning index only when current fragment is defined
fix prevents loading remote plugin several times when notes are enabled
hide rolling links backface
merge mutiplex fragment fix #395
increase min-height of cube/page transitions
Merge branch 'master' of https://github.com/ainformatico/reveal.js into dev
fix previous slide navigation logic (closes #397)
return current fragment index through getIndices, replaces getCurrentFragmentIndex #395