by omissis: added module weight, form altered for including cck fields in epub form fieldset, hook_uninstall() now removes everything epub-related from the db.

bug #910676 by omissis: Fixed 'out of order' issue for generated epubs thanks to a patch from Ivan Zugec.
task #910680 by omissis: Changed ePub library inclusion to use Libraries API module.

by omissis: added the possibility to create a front page for the book with an image field.
by omissis: added the possibility to add a CSS to theme the content.