0.4.2

* many releases these days, but there are some patches which are really worth to be HOT released : we just need them in production..
* finally fix FFT window border leaks in the streaming spectrum process for really better spectrograms and smoother spectral centroid waveforms
* mv gstutils to timeside.gstutils
* cleanup various processes
* Ogg, Aac and Flac encoders not really working now (some frames missing) :( Will be fixed in next release.