v1.3.1

Added

• Embedded cover art is extracted and used as the cover
• Metadata from audio files is now used, see how they are mapped (Discussion #59)
• Logger view in config page with adjustable log level #72
• Support FLAC audio files and MOBI ebook files #70
• Re-Scan button on details modal (to prevent losing progress by removing & re-adding)

Fixed

• Series bookshelf was overflowing on one shelf #69