Add serialization support

There are many libraries out there for serialization but we need one to cooperate with binary_data in a good way. The API must be easy to use and most not provide more than the basic needs.

Serialization must be uniform. All types of data must be serializable in the exactly same way.
e.g my_archive << data1 << data2;

To archive this, RTTI can be used, taking advantage of dynamic_cast<> and is_class(), a good example is:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2559.htm