Adds transform support for c:media/c:download.
Refactor tests into targeted calls.
Adds support for most c:media/c:image transforms.
Adds transform for c:image/@thumbnail.
Adds the partial transform of c:media/c:flash.
Fixes @data-longdesc and @data-media-type.
Adds c:param support and refactors existing attribute assignment.
Fixes @display->@data-display rather than an entry in @class.
Fixes c:download to include a@class='download'.
Generalizes data-* for c:image.
Adds support for c:audio.
Makes c:audio always transform to audio.
Adds c:video transform support.
Adds c:media/c:java-applet transform support.