DynamicGridUtils.CreateGridWindow now opens in CenterScreen.

inabox.wpf/DynamicGrid/DynamicGridUtils.cs

@@ -473,6 +473,7 @@ public static class DynamicGridUtils
         dynamicGrid.Margin = new Thickness(5);
         
         var window = new ThemableWindow { Title = title };
+        window.WindowStartupLocation = WindowStartupLocation.CenterScreen;
         window.SetValue(WindowBehavior.HideCloseButtonProperty, showbuttons);
 
         var grid = new Grid();