Added - music related generator modules (moved from mutwo.ext-common-generators)
0.2.0
Added - music related parameter and converter modules (which have been removed from [mutwo core](https://github.com/mutwo-org/mutwo) in verion 0.49.0 with [commit ae94b531e431349d9c2b24c052498e1d96add6a4](https://github.com/mutwo-org/mutwo/commit/ae94b531e431349d9c2b24c052498e1d96add6a4))