Closes#38
* Move changes to master branch
* Fixed errors stemming from improper move
* Add EPub to library
* Extract everything in root folder, don't create subfolders
* made changes to epubparser.py
* changed json metadata file and added some safeguards for different epub formats
* Correctly read metadata and convert relative paths
* Corrected path for EPUB3
* fixed cover not showing up
* Get missing chapters names
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Co-authored-by: Danisty <danisty.nori@gmail.com>