Function deselect

plugins/MultiDrag/MultiDrag.js:546–552

* Deselects the provided multi-drag item * @param {HTMLElement} el The element to be deselected

(el)

			 * @param  {HTMLElement} el    The element to be deselected
			 */
			deselect(el) {
				let sortable = el.parentNode[expando],
					index = multiDragElements.indexOf(el);
				if (!sortable || !sortable.options.multiDrag || !~index) return;
				toggleClass(el, sortable.options.selectedClass, false);
				multiDragElements.splice(index, 1);
			}
		},
		eventProperties() {
			const oldIndicies = [],