Small fixes

WGneu/Utils.cs

@@ -35,6 +35,10 @@ namespace WGneu {
             }
         }
 
+        public static IEnumerable<T> FindVisualChilds<T>(DependencyObject depObj, IEnumerable<DependencyObject> exempt) where T : DependencyObject {
+            return FindVisualChilds<T>(depObj).Where(c => !exempt.Contains(c));
+        }
+
         public static int Modulo(string a, int b) {
             if (!a.All(char.IsDigit))
                 throw new ArgumentException("First argument has to be a decimal string");