Add (failing) unit test for updating paths when data changes.
Add (failing) unit test for updating paths when data changes.

palantir/plottable,jacqt/plottable,alyssaq/plottable,NextTuesday/plottable,RobertoMalatesta/plottable,onaio/plottable,danmane/plottable,palantir/plottable,iobeam/plottable,NextTuesday/plottable,onaio/plottable,onaio/plottable,iobeam/plottable,danmane/plottable,alyssaq/plottable,softwords/plottable,danmane/plottable,jacqt/plottable,gdseller/plottable,RobertoMalatesta/plottable,jacqt/plottable,NextTuesday/plottable,iobeam/plottable,palantir/plottable,RobertoMalatesta/plottable,softwords/plottable,alyssaq/plottable,gdseller/plottable,palantir/plottable,softwords/plottable,gdseller/plottable