new in 0.3
==========
 * now implemented as effect-plugin sndstretch_xmms_eff.so
                  and output-plugin sndstretch_xmms_out.so
 * sndstretch_config() not any more called from sndstretch_init(), because
   it's loaded even if it's not activated.

new in 0.2
==========
 * bugfix for speed=0, small pitch setting:
     snr_o of sndscale now does not exceed 2^15
 * sndscale slightly more optimized
 * improved accuracy of int divider from 2^15 to 2^16 
     should improve quality a bit (hehe ;-)
 * bugfix for speed=0, small pitch setting:
     snr_o of sndscale now does not exceed 2^16
 * added scale slider
 * added 2 icons (sndstretch_xmms.xpm, FB_logo.xpm)
 * added about button into configwin-icon
 * pepped up about box a bit
 