fixed test bc filter parameters are now Signals
getType
MonoSynth Example
Slider
exponential decay and ability to setMin/Max
Some MonoSynth presets
flexible function signature if define is not defined
optional input arg to receive.
fixed top issue.
made it wider and quieter.
styling the oscillator drop down.
removed unison controls
a couple more presets
added the synth to the examples
reworded the description.
WaveTable -> PeriodicWave for old browsers
DuoSynth example first commit
updated MonoSynth description.

oscillator volume now works.
updated presets
removed old examples