Added version number on ESKF new classes.

src/main/java/org/orekit/estimation/sequential/EskfMeasurementHandler.java

@@ -37,6 +37,7 @@ import org.orekit.time.AbsoluteDate;
  * @author Julie Bayard
  * @author Bryan Cazabonne
  * @author Maxime Journot
+ * @since 11.1
  */
 public class EskfMeasurementHandler implements OrekitStepHandler {
 

src/main/java/org/orekit/estimation/sequential/SemiAnalyticalKalmanEstimator.java

@@ -62,6 +62,7 @@ import org.orekit.utils.ParameterDriversList.DelegatingDriver;
  * @author Julie Bayard
  * @author Bryan Cazabonne
  * @author Maxime Journot
+ * @since 11.1
  */
 public class SemiAnalyticalKalmanEstimator {
 

src/main/java/org/orekit/estimation/sequential/SemiAnalyticalKalmanEstimatorBuilder.java

@@ -27,6 +27,7 @@ import org.orekit.utils.ParameterDriversList;
  * @author Julie Bayard
  * @author Bryan Cazabonne
  * @author Maxime Journot
+ * @since 11.1
  */
 public class SemiAnalyticalKalmanEstimatorBuilder {
 

src/main/java/org/orekit/estimation/sequential/SemiAnalyticalKalmanModel.java

@@ -68,6 +68,7 @@ import org.orekit.utils.ParameterDriversList.DelegatingDriver;
  * @author Julie Bayard
  * @author Bryan Cazabonne
  * @author Maxime Journot
+ * @since 11.1
  */
 public  class SemiAnalyticalKalmanModel implements KalmanEstimation, NonLinearProcess<MeasurementDecorator> {