it's a clone of https://github.com/psiegman/epublib i add some epub3 support
EPUB3 standard EPUB 3 Overview Publications 3.0 Content Documents 3.0 Open Container Format (OCF) 3.0 Media Overlays 3.0 EPUB Canonical Fragment Identifier (epubcfi) Specification EPUB 3 Changes from EPUB 2.0.1 Epub3 chinese version