What is new:
- added AIFF support (load only);
- progressive JPEG support;
- new functions: new_filter(), remove_filter(), reset_filter(), init_filter(), apply_filter() - for working with recursive (IIR) and nonrecursive (FIR) digital filters;
- new function: wavetable_generator() - very fast multichannel sampler, where the sample is always looped and fixed-size (256 for 8bit data, or 32768 for 16bit data);
- new sound examples: filter_16bit, filter_16bit_fixed_point, filter_32bit;
- bugs fixed.