Added feature to stop drawing when double clicked using pen tool#3311

krVatsal wants to merge 3 commits intoGraphiteEditor:masterGraphiteEditor/Graphite:masterfrom

krVatsal:add-feature-to-stop-drawing-on-double-click-using-pen-toolkrVatsal/Graphite:add-feature-to-stop-drawing-on-double-click-using-pen-toolCopy head branch name to clipboard