Changes:
- schema-129 More music examples
- schema-158 Music: Score as well as Soundtrack
- schema-157 Change script path
- schema-152 Reevaluate writers source element
- schema-147 Music: Record side labels independent of records
- schema-146 Music: Album level composers
- schema-124 Music: Lyricists and Arrangers job roles
- schema-137 Music: Identify bonus tracks and album reissue
- schema-135 Some XSD files have trailing whitespace
- schema-116 Add a 'download' target to the Makefile
- schema-134 Create a new testing framework
- schema-133 CharacterNameType: The content model is not determinist
- schema-121 Music structures for vinyl record