Dynamic type information requirements for all API base->subclasses

[Samir Menon]

class Super{
public:
Super(const std::string& type_name) : SObject(type_name){}
private:
Super();
};

class SubOfSuper{
public:
SubOfSuper() : Super(std::string("SubOfSuper")){}
}

Forces specifying dynamic type information.

[Samir Menon]

Issue #32 was marked as a duplicate of this issue.

[Samir Menon]

Most of the code follows this. The serialization thrust led to a lot of fixes.