Mark moveend as stable

src/ol/mapevent.js

@@ -8,18 +8,21 @@ goog.require('goog.events.Event');
  * @enum {string}
  */
 ol.MapEventType = {
+
   /**
    * Triggered after a map frame is rendered.
    * @event ol.MapEvent#postrender
    * @api
    */
   POSTRENDER: 'postrender',
+
   /**
    * Triggered after the map is moved.
    * @event ol.MapEvent#moveend
-   * @api
+   * @api stable
    */
   MOVEEND: 'moveend'
+
 };