Restore splitter-merger to play well with setFilters

When trying to add nodes to a WebAudio graph using the setFilters method in version 1.1.1, I get the following error:

Uncaught TypeError: Failed to execute ‘connect’ on ‘AudioNode’: No function was found that matched the signature provided.

The error is in reference to this line of the setFilters method, which was changed in PR#689.

I’m not doing anything fancy - just mixing three separate mono waveforms into stereo, with one of them panned center and the others panned left and right. The relevant code for one of them (called waveLeft) looks like this:

var centerGain = 0.3;

var pannerLeft = waveLeft.backend.ac.createStereoPanner();
pannerLeft.pan.value = -1;

var gainL = waveLeft.backend.ac.createGain();
gainL.gain.value = 1 - centerGain;

waveLeft.backend.setFilters([pannerLeft, gainL]);

It was still working as of v1.1.0:

http://fiddle.jshell.net/nathansnider/qqtjko16/

but produces the error (and does not add any panner and gain nodes) in v1.1.1:

http://fiddle.jshell.net/nathansnider/Lty0kfdq/

[whenov]

Well, just revert it then, maybe the setChannel function should be implemented in user code using setFilters anyway. It’s better to keep the default filters as simple as possible.

[nathansnider]

Yes, setFilters is working again in 1.1.2. Thanks, @katspaugh! Looks like we can close this issue, unless you want to keep it open for future work on the splitter-merger.