module documentation

Miscellaneous transforms.

Class CallBack Inserts a callback into a document. The callback is called when the transform is applied, which is determined by its priority.
Class ClassAttribute Move the "class" attribute specified in the "pending" node into the immediately following non-comment element.
Class Transitions Move transitions at the end of sections up the tree. Complain on transitions after a title, at the beginning or end of the document, and after another transition.