Change empty() to a boolean test, and add removeAll for ditching all the components
Change empty() to a boolean test, and add removeAll for ditching all the components

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