* merge: dev + master

Sortable.js

@@ -683,6 +683,9 @@
 
 							if (elTop === tgTop) {
 								after = (target.previousElementSibling === dragEl) && !isWide || halfway && isWide;
+							}
+							else if (target.previousElementSibling === dragEl || dragEl.previousElementSibling === target) {
+								after = (evt.clientY - targetRect.top) / height > 0.5;
 							} else {
 								after = tgTop > elTop;
 							}

react-sortable-mixin.js

@@ -85,8 +85,8 @@
 				copyOptions = _extend({}, options),
 
 				emitEvent = function (/** string */type, /** Event */evt) {
-					var method = this[options[type]];
-					method && method.call(this, evt, this._sortableInstance);
+					var method = options[type];
+					method && typeof method === "function" && method.call(this, evt, this._sortableInstance);
 				}.bind(this);