Carousel Release Notes

*** version 2.7.0 ***

* Important change - nav elements should be BUTTONS for receiving focus
        for accessibility.
* Make the Carousel list element, and item element configurable.
* Added helper methods like isAutoPlayOn(), isAnimating().
* Fixed bugs related to computing the container width.
* Changed the ambiguous "autoPlay" attribute name to "autoPlayInterval".
* Code cleanup.

*** version 2.6.0 ***

* Initial release.
