finally made tabStops usable in 3.9.0, which is integrated in parinfer-codemirror and live on demo: http://shaunlebron.github.io/parinfer/demo

notes on integrating them here, with reference examples from what I did in parinfer-codemirror: https://github.com/shaunlebron/parinfer/blob/master/lib/doc/integrating.md#tab-stops