EPUB book export

Moodle plugin which adds EPUB v3 export functionality to the Book plugin.
This plugin adds a link in the administration block to allow for the exporting of book module content as an EPUB v3.0
You can include a cover photo and metadata for an ePUB export by using the ‘Edit Settings’ link. In the description fields, upload an image (jpg or png) and include the following labels. NOTE that these must be in a separate pargraph (usually created by hitting the enter key):
author: Firstname Lastname
title: Title of the book
description: A description of the book
publisher: The ePUB publisher (defaults to author)
Potential privacy issues
None.