-Added DateTimeZoneHandling to control reading and writing DateTime time zone details
-Added reader/writer specific Formatting, DateFormatHandling and DateTimeZoneHandling to JsonSerializerSettings
-Added feature of reader/writer specific settings to be set on JsonReader/JsonWriter when serializing
-Added ReadAsDate to JsonReader
-Added ReadAsString to JsonReader
-Changed JsonTextReader to automatically read ISO strings as dates
-Refactored ReadAsXXX methods and reduce code redundancy
-Removed unused JsonDateTimeSerializationMode
-Fixed JsonValidatingReader not validating the first array item twice
-Fixed JsonSchema not correctly validating integers as a subset of decimal
-Changed JsonTextReader.Culture to be CultureInfo.InvariantCulture by default
-Fix boolean values sometimes being capitalized when converting to XML
-Fix error when deserializing ConcurrentDictionary
-Fix serializing some Uris
-Change KeyValurPairConverter to not rely on the order of the key and value properties
-Fixed deserializing null values into DataTables
-Fixed error when deserializing readonly IEnumerable<T> array properties
-Fixed not including type name for byte[] values
-Fix DynamicReflectionDelegateFactory erroring when calling static methods
-Fix CustomCreationConverter to return null when converting a null JSON value
-Added WriteObjectId to BsonWriter
-Added BsonObjectId and BsonObjectIdConverter classes
-Added KeyValuePairConverter
-Added DynamicCodeGeneration flag to DefaultContractResolver
-Changed JsonConverter.ReadJson to add an extra parameter: currentValue
-Add SerializeXNode, DeserializeXNode methods to JsonConvert
-Remove "-" prefix when serializing a JSON constructor, prefix not compatible with XML naming standard
-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 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
-Added NullValueHandling, DefaultValueHandling and ReferenceLoopHandling to JsonPropertyAttribute
-Change JsonMemberMapping from a struct to a class. Now has too many properties for a struct
-Move test serialization objects to TestObjects namespace
-Fixed JsonConvert to always write a floating point number with a decimal place
-Changed Type values to serialize and deserialize to type name string
-Fixed JsonWriter to allow objects and arrays to be written in a constructor
-Added JsonContainerAttribute with Id, Title and Description members. JsonObject and JsonArray inherit from this attribute
-Added JsonArrayAttribute. Has flag to control whether array can contain null items.
-Added IsRequired to JsonProperty
-Replaced protected method GetSerializableMembers with GetMemberMappings on JsonSerializer
-Fixed QuoteChar not getting set when parsing property name
-Added Load(JsonReader) to JProperty, JConstructor
-Fixed error when populating JProperty with content from collection
-Added the ability for JsonTokenWriter to write individual values as well as arrays and objects
-Added CreateReader to JToken
-Added FromObject to JToken
-Added ReadFrom to JToken
-Added WriteValue overloads to JsonWriter for nullable types
-Fixed JsonTextWriter.WriteValue(string) to write null instead of an empty string for a null value
-Fixed JsonWriter.WriteValue(object) to no longer error on null values
James Newton-King