• New feature - Added Merge to LINQ to JSON
• New feature - Added JValue.CreateNull and JValue.CreateUndefined
• New feature - Added Windows Phone 8.1 support to .NET 4.0 portable assembly
• New feature - Added OverrideCreator to JsonObjectContract
• New feature - Added support for overriding the creation of interfaces and abstract types
• New feature - Added support for reading UUID BSON binary values as a Guid
• New feature - Added MetadataPropertyHandling.Ignore
• New feature - Improved performance of KeyValuePairConverter
• New feature - Improved performance when serializing large XML documents
• Change - Limited integer parsing size to JavaScript integer size
• Change - Validation that numbers don't end with an invalid character
• Fix - Fixed JToken.ReadFrom creating a string value for a comment
• Fix - Fixed relying on Dictionary order when calling parameterized constructors
• Fix - Fixed writing new lines to use TextWriter.WriteLine
• Fix - Fixed deserializing non-generic IReadOnlyCollection implementations
• Fix - Fixed sending HTTP requests when resolving DTD urls in XmlNodeConverter
• Fix - Fixed populating ignored properties with DefaultValueHandling.IgnoreAndPopulate
• Fix - Fixed not throwing JsonReaderException when parsing some invalid numbers
• Fix - Fixed JsonConvert.PopulateObject not setting JsonReader settings
• Fix - Fixed deserializing JObjects starting with a comment
• Fix - Fixed using DateParseHandling and FloatParseHandling with DataTable/DataSet
• Fix - Fixed serializing static fields
• Fix - Fixed selecting a property after an empty array with a JSON Path query
• Fix - Fixed error handling when last value in array or object fails
• Fix - Fixed directly serializing XmlElements
• Fix - Fixed incorrect NuGet targets on .NET 4.5 portable assembly
• Fix - Fixed using JTokenEqualityComparer with JProperties that have no value
• Fix - Fixed MetadataPropertyHandling.ReadAhead bugs