Support all AudioNode types

[spite]

AnalyserNode (createAnalyser) ✓
AudioBuffer (createBuffer) ✓
AudioBufferSourceNode (createBufferSource) ✓
AudioDestinationNode (via AudioNode.prototype.connect) ✓
BiquadFilterNode (createBiquadFilter) ✓
ChannelMergerNode (createChannelMerger) ✓
ChannelSplitterNode (createChannelSplitter) ✓
ConvolverNode (createConvolver) ✓
DelayNode (createDelay) ✓
DynamicsCompressorNode (createDynamicsCompressor) ✓
GainNode (createGain) ✓
MediaElementAudioSourceNode (createMediaElementSource) ✓
MediaStreamAudioDestinationNode (createMediaStreamDestination) ✓
MediaStreamAudioSourceNode (createMediaStreamSource) ✓
OscillatorNode (createOscillator) ✓
PannerNode (createPanner) ✓
PeriodicWaveNode (createPeriodicWave) ✓
ScriptProcessorNode (createScriptProcessor) ✓
WaveShaperNode (createWaveShaper) ✓

Also:

StereoPannerNode (createStereoPanner) ✓