Merge pull request #137 from HermesSbicego-Laser/patch-1

Adds dragDirection object required by jQueryUI 1.13+

Author: ilikenwf

jquery.mjs.nestedSortable.js

@@ -262,6 +262,12 @@
 			childLevels = this._getChildLevels(this.helper);
 			newList = document.createElement(o.listType);
 
+  		        // dragDirection object is required by jquery.ui.sortable.js 1.13+
+		       	this.dragDirection = {
+			      	vertical: this._getDragVerticalDirection(),
+				horizontal: this._getDragHorizontalDirection()
+		    	};
+			
 			//Rearrange
 			for (i = this.items.length - 1; i >= 0; i--) {