featureful EPUB (ebook) reader mode for Emacs

 nov.el provides a major mode for reading EPUB documents (ebooks) in Emacs.
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 Features:
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   - Basic navigation (jump to TOC, previous/next chapter)
   - Remembering and restoring the last read position
   - Jump to next chapter when scrolling beyond end
   - Renders EPUB2 (.ncx) and EPUB3 (<nav>) TOCs
   - Hyperlinks to internal and external targets
   - Supports textual and image documents
   - View source of document files
   - Metadata display
   - Image rescaling