fix(timeline): #2679 TypeError: Cannot read property 'hasOwnProperty' of null (#2735)

* Fix redraw order
* Fix error when option is not defined
* Allow template labels
* Add .travis.yml file
* Add experiment travis code
* Fix react example
* Fix bug in item editable

lib/timeline/component/item/Item.js

@@ -41,7 +41,7 @@ function Item (data, conversion, options) {
     }
     else if(typeof options.editable === 'object') {
       this.editable = {};
-      util.selectiveExtend(['updateTime', 'updateGroup', 'remove'], this.editable, data.editable);
+      util.selectiveExtend(['updateTime', 'updateGroup', 'remove'], this.editable, options.editable);
     };
   }
 }