support for .NET framework 3.5

Still have bugs

Net35/HandyControl_Net35/Shell/JumpPath.cs

@@ -0,0 +1,11 @@
+namespace Microsoft.Windows.Shell
+{
+    using System;
+    using System.Runtime.CompilerServices;
+
+    public class JumpPath : JumpItem
+    {
+        public string Path { get; set; }
+    }
+}
+