old_contents: from . import attack
  
  attack_types = attack.load_attack_types()
  
  new_attack, attacks = attack.load_attacks(attack_types)
  
new_contents: from . import attack, armor, tile, movement, unit
  
  attack_types = attack.load_attack_types()
  
  new_attack, attacks = attack.load_attacks(attack_types)
  
  new_armor, armors = armor.load_armors(attack_types)
  
  tiles = tile.load_tiles()
  
  new_movement, movements = movement.load_movements(tiles)
  
  new_unit, units = unit.load_units(new_attack, new_armor,  new_movement)
  
subject: Include the loaded json->classes in 'types'