v1.3.0

Automated release: version and notes generated from pull requests merged since 1.2.0.

• Add metadata.py: container chapter markers and title/artist/comment tags, streams copied (#157)

What's Changed

• Add metadata.py: container chapter markers and title/artist/comment tags, streams copied by @kajisho5 in #157

Full Changelog: v1.2.0...v1.3.0