This release enhances several base structures, providing fully automated object change tracking and object cloning (allowing, for example, to copy page annotations and Acroform fields). It adds support to video embedding, article threads, page labels and several other functionalities.
This release may be downloaded from:
https://sourceforge.net/projects/clown/files/PDFClown-devel/0.1.2%20Beta/
PDF Clown 