Get rid of stability annotations and document stability with api

This change adds a stability value to the api annotation, with
'experimental' as default value.

enum, typedef and event annotations are never exportable, but
api annotations are needed there to make them appear in the
docs.

Nested typedefs are no longer inlined recursively, because the
resulting tables get too wide with the current template.

src/ol/control/mousepositioncontrol.js

@@ -42,7 +42,6 @@ ol.control.MousePositionProperty = {
  *       mouse position in
  * @todo observable coordinateFormat {ol.CoordinateFormatType} the format to
  *       render the current position in
- * @todo stability experimental
  * @todo api
  */
 ol.control.MousePosition = function(opt_options) {
@@ -133,8 +132,8 @@ ol.control.MousePosition.prototype.handleProjectionChanged_ = function() {
 
 
 /**
- * @return {ol.CoordinateFormatType|undefined} projection.
- * @todo stability experimental
+ * @return {ol.CoordinateFormatType|undefined} Coordinate format.
+ * @todo api
  */
 ol.control.MousePosition.prototype.getCoordinateFormat = function() {
   return /** @type {ol.CoordinateFormatType|undefined} */ (
@@ -147,8 +146,8 @@ goog.exportProperty(
 
 
 /**
- * @return {ol.proj.Projection|undefined} projection.
- * @todo stability experimental
+ * @return {ol.proj.Projection|undefined} Projection.
+ * @todo api
  */
 ol.control.MousePosition.prototype.getProjection = function() {
   return /** @type {ol.proj.Projection|undefined} */ (
@@ -203,7 +202,7 @@ ol.control.MousePosition.prototype.setMap = function(map) {
 
 /**
  * @param {ol.CoordinateFormatType} format Coordinate format.
- * @todo stability experimental
+ * @todo api
  */
 ol.control.MousePosition.prototype.setCoordinateFormat = function(format) {
   this.set(ol.control.MousePositionProperty.COORDINATE_FORMAT, format);
@@ -216,7 +215,7 @@ goog.exportProperty(
 
 /**
  * @param {ol.proj.Projection} projection Projection.
- * @todo stability experimental
+ * @todo api
  */
 ol.control.MousePosition.prototype.setProjection = function(projection) {
   this.set(ol.control.MousePositionProperty.PROJECTION, projection);