After a small delay, I finally finished everything I wanted to for v0.2.1. This release is focused more on adding new features, especially regarding sound synthesis.
Most focus lies on the new filtering functions, which are implemented using the FFT algorithm. You can manipulate the frequencies of a sound using these functions, similar to an EQ (only difference being that it's not a graphic EQ). On top of that there are a bunch of new noise functions which use these filters to derive different noise "colors" from white noise.
I also must say - my life currently is very busy, as you have already seen with this delay. I don't know if I'll have time to continue working on this project, for now I will declare that development (and maintenance) of this project are paused.