-Changed serializing ISerializable types under partial trust to error to fix security issue
-Fixed LinqBridge collision error in .NET 2.0 by moving types to a different namespace
-Fixed JObject.Keys error when object has no items
-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 populating members when creating object from non default constructor
-Added case best match when deserializing properties
-Added ToString(Formatting, JsonConverters[]) overload to JToken
-Added SerializeObject(object, Formatting, JsonConverter[]) overload to JsonConvert
-Added IMappingResolver. Property added to JsonSerializer, JsonSerializerSettings, JsonSchemaGenerator
-Added CamelCaseMappingResolver
James Newton-King