fadetime for parallel synths

[LFSaw]

this seems to be important for parallel synths to work properly regarding fading in and out, i.e. they should not fade at all... (sortof tested):

t.setGlobal(\fadeTime, 1, \attack, 1); // set global fadetime
t.set(']', \fadeTime, 0, \attack, 0);
t.set(']', \fadeTime, 0, \attack, 0);