Add aliases for generating a tracklist.
Able to know where to generate tracklists.
Split functionality in different engines.
Finalize generate-tracklist.
Rewrite of generate-tracklist using TracklistEngine.
Read tracklist metadata.
Read all metadata from MetadataEngine.tracklist.*
Allow reading of Mp3 common tags.
Add a bit of meta-programming for accessing metadata.
Metaprogramming for every engine.
TracklistEngine now read index and title.
Draft of what's to come when saving tracklist to tags.