Gensound

* Playback now available through OS default (always available), or PyGame, simpleaudio or playsound, whichever is available (see IO Guide).
* Can now read/export files of many formats, if FFMPEG is available (Wave/AIFF support always available).
* Numpy is now the only hard requirement.
* More filters
* Introducing control tokens in Melodic Shorthand Notation.

See more in What's New.

* Updated `FadeIn` and `FadeOut` Transforms
* Added Filters
* `Vibrato` effect
* AIFF/AIFC file support
* Updated I/O amplitude behaviour

See more in [What's New](https://github.com/Quefumas/gensound/wiki/Version-History).

* Playback and WAV export are now attached as Signal methods, making it much easier to use.
* Added gensound.transforms.Stretch transform, to perform pitch-changing time-stretch
* Added Raw audio resample function
* Some more support for byte widths on export and file load
* Fixed `Convolution` transform