CNAM from HDPT is a part of Dawnguard.esm.
ATKR from RACE is a part of Dawnguard.esm.
CIS2 from SCRL is a part of Dragonborn.esm.
SPMV from RACE is a part of Dragonborn.esm.
To avoid explicit initialization. It should happen in the load functions anyway.
* Move all non-zero initializations to corresponding class definition.
* Replace std::vector by std::array when it has constant size.