Muller: going back to the .set_size() approach, but with actual zeroing
Muller: going back to the .set_size() approach, but with actual zeroing

(except for diffCol39 where the zeros() constructor is called --> no copy

numediart/MotionMachine,numediart/MotionMachine,barneyElDinosaurio/MotionMachine,barneyElDinosaurio/MotionMachine,barneyElDinosaurio/MotionMachine,numediart/MotionMachine,numediart/MotionMachine