-Added ObjectCreationHandling to JsonPropertyAttribute

-Added IValueProvider, ReflectionValueProvider, DynamicValueProvider
-Added Dynamic.snk
-Added Required enum with options Default, AllowNull and Always
-Added serialization event support to Silverlight version
-Added Converter to JsonProperty for JsonConverter
-Changed IsRequired to Required enum
-Changed schema generator to allow for Required enum options
-Changed Silverlight project version to Silverlight 3
-Improved error message when JSON array encountered for object and vice-versa when deserializing
-Improved error message for converting types when deserializing
-Improved error message from getting and setting properties when serializing and deserializing
-Fixed empty string being converted to null when deserializing
-Removed dependency on Entity Framework and LINQ to SQL assemblies

Src/Newtonsoft.Json.Tests/TestObjects/CircularReferenceClass.cs

@@ -32,7 +32,7 @@ namespace Newtonsoft.Json.Tests.TestObjects
 {
   public class CircularReferenceClass
   {
-    [JsonProperty(IsRequired = true)]
+    [JsonProperty(Required = Required.Always)]
     public string Name { get; set; }
     public CircularReferenceClass Child { get; set; }
   }