change NeuSynth parameter definition: spec.param -> $.param()
change NeuSynth second argument: object -> function
change NeuSynthDef second argument: object -> function
change NeuSynth internal: prep for multiple outputs support
add NeuSynth $.out(index, ugen)
add NeuSynth $.in(index)
add NeuSynth#connect(destination, output, input)
fix NeuContext#$outlet: analyser -> gain
add ugen/delay
add ugen/comp
add ugen/clip
add ugen/conv
update ugen/index
fix ugen/buf: when null buffer