using IDs to handle effect routing properly
added reset and eval functions
sequencer now passes nextTick! this opens up a lot of possibilities.
reset and eval docs
updated method of chaining effects using ID. added eval sequencer. scaffolding for filter envelope.
working lp/hp/bp/notch filter with envelope, plus stereo pan.
fixed the filter, ditched pannerNode in favor of oldschool stereo L and R channels.