Added onChoose event.

This event will fire when an element is chosen, and is particularly
useful for providing the user with a visual, auditory or tactile indication,
in case a delay was enabled.

README.md

@@ -78,12 +78,17 @@ var sortable = new Sortable(el, {
 		dataTransfer.setData('Text', dragEl.textContent);
 	},
 
-	// dragging started
+	// Element is chosen
+	onChoose: function (/**Event*/evt) {
+		evt.oldIndex;  // element index within parent
+	},
+
+	// Element dragging started
 	onStart: function (/**Event*/evt) {
 		evt.oldIndex;  // element index within parent
 	},
 	
-	// dragging ended
+	// Element dragging ended
 	onEnd: function (/**Event*/evt) {
 		evt.oldIndex;  // element's old index within parent
 		evt.newIndex;  // element's new index within parent
@@ -635,11 +640,11 @@ Link to the active instance.
 
 ```html
 <!-- CDNJS :: Sortable (https://cdnjs.com/) -->
-<script src="//cdnjs.cloudflare.com/ajax/libs/Sortable/1.3.0-rc1/Sortable.min.js"></script>
+<script src="//cdnjs.cloudflare.com/ajax/libs/Sortable/1.4.0-rc1/Sortable.min.js"></script>
 
 
 <!-- jsDelivr :: Sortable (http://www.jsdelivr.com/) -->
-<script src="//cdn.jsdelivr.net/sortable/1.3.0-rc1/Sortable.min.js"></script>
+<script src="//cdn.jsdelivr.net/sortable/1.4.0-rc1/Sortable.min.js"></script>
 
 
 <!-- jsDelivr :: Sortable :: Latest (http://www.jsdelivr.com/) -->

Sortable.html

@@ -88,6 +88,10 @@
           this.fire("remove", e)
         },
 
+        onChoose: e => {
+          this.fire("choose", e)
+        },
+
         onStart: e => {
           this.fire("start", e)
         },

Sortable.js

@@ -336,6 +336,9 @@
 
 					// Bind the events: dragstart/dragend
 					_this._triggerDragStart(touch);
+
+					// Drag start event
+					_dispatchEvent(this, rootEl, 'choose', dragEl, rootEl, oldIndex);
 				};
 
 				// Disable "draggable"
@@ -1244,6 +1247,6 @@
 
 
 	// Export
-	Sortable.version = '1.3.0';
+	Sortable.version = '1.4.0';
 	return Sortable;
 });

component.json

@@ -1,7 +1,7 @@
 {
   "name": "Sortable",
   "main": "Sortable.js",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "homepage": "http://rubaxa.github.io/Sortable/",
   "repo": "RubaXa/Sortable",
   "authors": [