v0.1.0

The library can:

1. load a Prolog song (using predicates which allow de-duplication of pitch/length sequences);
2. export a Lilypond file;
3. export an UltraStar file.

As an example Bernhard Flies' Wiegenlied is used, lyrics included.

All these use cases are described in README.md, GitHub Page mirrors that.

Summary: a basic creation and the export work and are described.