Rule of 5 for Vec2F
Fix the following warning:
.././include/vector.h:125:5: warning: definition of implicit copy assignment operator for 'Vec2F' is deprecated because it has a user-declared copy constructor [-Wdeprecated-copy]
Fix the following warning:
.././include/vector.h:125:5: warning: definition of implicit copy assignment operator for 'Vec2F' is deprecated because it has a user-declared copy constructor [-Wdeprecated-copy]