Change Details

Set CXX min version to C++11, fix ~80% of warnings - Add `override` to virtual functions where needed - Add `static` to functions wthout definition - Replace `0` with `nullptr` where needed

Set CXX min version to C++11, fix of warnings - Add `override` to virtual functions where needed - Add `static` to functions wthout definition - Replace `0` with `nullptr` where needed

Set CXX min version to C++11, fix ~80% of warnings - Add `override` to virtual functions where needed - Add `static` to functions wthout definition - Replace `0` with `nullptr` where needed