Additions
- Add MPD priority support.
- Add filename search support to the playlist.
Improvements
- A known bug when saving a playlist now gives a more descriptive warning when it occurs.
Bug fixes
- Fixed an error when trying to list playlists when there were none.
- Fixed the downloader location chooser not working.
Development changes
- Changed dependency management to yarn.
- Add basic style rules.
- New code is in ES6+.
Updated most dependencies to their latest versions that are compatible.