update projects to windows 8.1. fix json deserialization bug. prevent double hash when serializing colors.
serialize simpl refs as a number not a string in json. switch point scalar type to use double instead of int.
support deserializing html color names. don't wrap boolean values in quotes during json serialization.
handle deserialization of colors with rgb(.,.,.) format. propery skip ignored tags during deserialization. serialize boolean using lowercase letters.