Sunvox update

Sunvox gets an update:

• added new controller in the "generator": "Duty cycle" (only for rectangular waveform);
• WAV/AIFF/XI preview in the "load" dialogs of the "sampler";
• animated visualization of the state of the "sampler";
• 24bit WAV support;
• fixed bug in the "FM" synth;
• performance optimization.

Sunvox at the app store: