Check libraries in each class

[spirosmaggioros]

Some files may contain libraries that are not needed, and some times in some OS's there are compilation errors if some libraries are not included (for example in macos with c++ -std=c++17 compilation #include <memory> is not needed for std::shared_ptr<T> but in Windows with g++ -std=c++17 there are compilation errors).

If you don't have a mac, please make sure everything works as it should, otherwise report that with an issue or solve it by adding/removing the needed library.