update to 0.5.1.20

HipparcosCatalogFilterForm.cs

@@ -1,10 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Drawing;
-using System.Linq;
-using System.Text;
 using System.Windows.Forms;
 
 namespace Hipparcos_DB

HipparcosCatalogViewerForm.cs

@@ -5645,7 +5645,7 @@ private void LabelSourceOfSpectralTypeData_MouseEnter(object sender, EventArgs e
 		private void LabelStandardErrorProperMotionDeclinationDesc_MouseLeave(object sender, EventArgs e) => SetColorSelfAndNeighbourAndClearStatusbar(labelSelf: ref labelStandardErrorProperMotionDeclinationDesc, labelNeighbour: ref labelStandardErrorProperMotionDeclinationData, color: SystemColors.Control);
 
 		private void LabelStandardErrorProperMotionDeclinationData_MouseLeave(object sender, EventArgs e) => SetColorSelfAndNeighbourAndClearStatusbar(labelSelf: ref labelStandardErrorProperMotionDeclinationDesc, labelNeighbour: ref labelStandardErrorProperMotionDeclinationData, color: SystemColors.Control);
-		
+
 		private void LabelCorrelationDeclinationByRightAscensionDesc_MouseLeave(object sender, EventArgs e) => SetColorSelfAndNeighbourAndClearStatusbar(labelSelf: ref labelCorrelationDeclinationByRightAscensionDesc, labelNeighbour: ref labelCorrelationDeclinationByRightAscensionData, color: SystemColors.Control);
 
 		private void LabelCorrelationDeclinationByRightAscensionData_MouseLeave(object sender, EventArgs e) => SetColorSelfAndNeighbourAndClearStatusbar(labelSelf: ref labelCorrelationDeclinationByRightAscensionDesc, labelNeighbour: ref labelCorrelationDeclinationByRightAscensionData, color: SystemColors.Control);