Thank you for making Siren. Siren is the only one tool can rename multiple EPUB files by metadata.
I have some Japanese and Chinese EPUB files cannot be found metadata information because it has different file structure.
Siren can load "OEBPS/content.opf" but cannot load "item/standard.opf" for metadata information.
According to container.xml, there two different file structure.
Because the publishers follow The Electronic Book Publishers Association of Japan and Digital Comic Association in japan.
http://www.digital-comic.jp/press_release_DCA_EPUB3.pdf
Can you let Siren load "item/standard.opf" for EPUB feature?
Thank you. 