0.10.0beta Release

It has been a while since the last release. The major changes include: libSoundTouch support (pitch and tempo change actions added), Adaptive Normalize, new audio output code (towards JACK correctness), some speed optimizations, more status bars, stability fixes, Spanish translation, and other fixes. See a complete list of changes at: http://sourceforge.net/project/shownotes.php?release_id=254346