loongson/pypi: links for gpkg-magenta-music

loongson/mirror gpkg.magenta.music-0.5.1-py2.py3-none-any.whl
loongson/mirror gpkg.magenta.music-0.5.1.dev1-py2.py3-none-any.whl
loongson/mirror gpkg.magenta.music-0.5.0-py2.py3-none-any.whl
loongson/mirror gpkg.magenta.music-0.4.0-py2.py3-none-any.whl
loongson/mirror gpkg.magenta.music-0.3.1-py2.py3-none-any.whl
loongson/mirror gpkg.magenta.music-0.3.1.dev1-py2.py3-none-any.whl
loongson/mirror gpkg.magenta.music-0.3.0-py2.py3-none-any.whl
loongson/mirror gpkg.magenta.music-0.3.0.dev2-py2.py3-none-any.whl
loongson/mirror gpkg.magenta.music-0.3.0.dev1-py2.py3-none-any.whl