Ruler Sweep widget methods. Refactor.
Ruler Sweep widget methods. Refactor.

NabaviLab/CNV-Visualizer,NabaviLab/CNV-Visualizer,igvteam/igv.js,NabaviLab/CNV-Visualizer,NabaviLab/CNV-Visualizer,NabaviLab/CNV-Visualizer,igvteam/igv.js