Automatically call constructors and destructors

Currently class constructors (initialize) and destructors (destroy) behave like ordinary methods. If derived class has its own constructor then it overrides parent class constructor. If derived class doesn't explicitly calls base class constructor then it never gets initialized while its methods can be called. Even if it does constructor can be run more than one time in case of diamond-diagram multiple inheritance or because child class explicitly called it several times. It is proposed to consider these methods as special methods that are invoked automatically by engine in appropriate order (base class first for constructor, reverse order for destructors, similar to how it is in C++). Explicit calls to these methods should result in no-op with deprecation warning and be forbidden in the future