Build: update AUTHORS.txt
Build: run jshint and jscs on release scripts
Release: ensure Sizzle is the latest tag

Fixes #14915
Selector: Fix test iframe submission for firefox

Ref jquery/sizzle@20fbadb0870bd30e0e66c68891f121c0450374c4
Selector: Use jQuery reference not Sizzle
Effects: Reintroduce use of requestAnimationFrame

Same as before, just use don't use prefixes, since they pretty match useless now
and use page visibility API to determine if animation should start.

Also null the requestAnimationFrame attribute in window for tests since
sinon does not provide fake method for it.

Fixes #9381
Effects: Improve raf logic

* Make animation behave as if jQuery.fx.off = true if document is hidden

* Use cancelAnimationFrame in jQuery.fx.stop