Merge pull request #2438 from xxMUROxx/feature/ProgressRing-IsActive

Remove BindsTwoWayByDefault from IsActiveProperty from ProgressRing

MahApps.Metro/Controls/ProgressRing.cs

@@ -15,7 +15,7 @@ public class ProgressRing : Control
     {
         public static readonly DependencyProperty BindableWidthProperty = DependencyProperty.Register("BindableWidth", typeof(double), typeof(ProgressRing), new PropertyMetadata(default(double), BindableWidthCallback));
 
-        public static readonly DependencyProperty IsActiveProperty = DependencyProperty.Register("IsActive", typeof(bool), typeof(ProgressRing), new FrameworkPropertyMetadata(true, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, IsActiveChanged));
+        public static readonly DependencyProperty IsActiveProperty = DependencyProperty.Register("IsActive", typeof(bool), typeof(ProgressRing), new PropertyMetadata(true, IsActiveChanged));
 
         public static readonly DependencyProperty IsLargeProperty = DependencyProperty.Register("IsLarge", typeof(bool), typeof(ProgressRing), new PropertyMetadata(true, IsLargeChangedCallback));