Now cache around NSData objects of individual pieces of album art,
unique by their byte contents. And the artwork image cacher will also
use the art ID keys from the database as the cache keys for NSImages,
so they'll not only be only read once per unique image, but also tracks
can have unique artwork per track, if the files so feature it.
Signed-off-by: Christopher Snowhill <kode54@gmail.com>
- Display playlist total duration in units up to weeks and down to just seconds, and only pluralize units as necessary
- Major change: Implemented a SQLite disk backed playlist, track data, and queue storage system, which will be synchronized from the player in real time, and will hopefully survive system or app crashes. Existing plist playlist will be imported on first run, and removed on shutdown.