Bugfix

not Every Object has the native toString Method, not even every native Object (for example HTMLDivElement)

src/helpers/helpers.core.js

@@ -48,7 +48,7 @@ var helpers = {
 	 * @since 2.7.0
 	 */
 	isObject: function(value) {
-		return value !== null && Object.prototype.toString.call(value) === '[object Object]';
+		return value !== null && typeof value === 'object';
 	},
 
 	/**