Add ChannelSplitterNode compat data (#500)
Add ChannelSplitterNode compat data (#500)

* adding ChanelSplitterNode

* adding missing notes

chrisdavidmills/browser-compat-data,mdn/browser-compat-data,teoli2003/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data