-Added ISerializable support
-Changed dictionary serialization to fall back to ToString for keys
-Changed schema generator to use JsonContracts to determine schema information
-Fixed schema validation bugs when schema has no properties
-Fixed not marking dictionary and array schemas as nullable
-Fixed serializing generic dictionary that doesn't implement IDictionary
-Added StreamingContext to JsonSerializer
-Added CreateMemberValueProvider method to DefaultContractResolver
-Fixed not falling back the original class from the metadata class when attribute not found
-Fix error message when attempting to deserialize custom dictionary with no default constructor
-Fix serializing private base members marked with JsonProperty attribute
-Fix performance issue when deserializing to object member
-Fix dictionary key encoding when serializing
-Fix WrappedDictionary being set to a property when deserializing
-Fix Silverlight serialization security error
-Changed class converter to be resolved from contract
-Changed built in converters to be resolved once when the contract is created. Big performance gain!
-Added BsonReader, BsonWriter
-Added support for reading and writing byte arrays to JsonReader, JsonWriter and LINQ to JSON classes
-Added ReadAsBytes to JsonReader
-Changed Silverlight build serializer to look for a TypeConverter
-Changed .NET build to not rely on System.ComponentModel.DataAnnotations assembly to support .NET 4.0 client profile
-Remove DateTimeOffset stand-in from Compact Framework build
-Fixed .NET 2.0 build to run on environments without .NET 2.0 SP1
-Fixed deserialization to always use a new value created from a JsonConverter
-Fixed XmlNodeConverter to support converting comments in JSON
-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
-Added JPath and SelectToken to JToken
-Fixed schema id not being written for collections
-Fixed TimeSpan serialization on Compact Framework
-Fixed unicode line break string encoding
-Changed OnError to be available in .NET 2.0, Silverlight and Compact Framework builds
-Added StreamingContext stand-in for frameworks where it isn't available
-Split test classes out of JsonSerializerTests
-Fixed many bugs around JProperty and JObject
-Changed JProperty constructor that doesn't take a value to internal
-Added many unit tests
-Renamed CloneNode to CloseToken
-Changed JPropertyDescriptor to always return the token rather than value
-Fixed decimals to always be written with a decimal place
-Replaced IMappingResolver with IContractResolver
-Renamed JsonMemberMapping to JsonProperty
-Added JsonContract, JsonObjectContract, JsonArrayContract, JsonDictionaryContract
-Added support for OnSerializing, OnSerialized, OnDeserializing, OnDeserialized callback methods
-Major refactoring of serialization internals
-Added CustomCreationConverter
-Added IsReference to JsonContainerAttribute
-Added PreserveReferencesHandling to JsonSerializer
-Added IReferenceResolver to JsonSerializer
-Split internals of JsonSerializer into JsonSerializerWriter (serializes) and JsonSerializerReader (deserializes)
-Moved serialize stack from JsonWriter (yuck) to JsonSerializerWriter (yay)
-Added FromObject overload with JsonSerializer argument for cases when state is needed
JamesNK