old_contents: from .parts import *
  from .vehicle import Vehicle
  from .memory import Memory
  from . import utils
  from . import config
  from .config import load_config
new_contents: __version__ = '2.1.3'
  
  from .parts import *
  from .vehicle import Vehicle
  from .memory import Memory
  from . import utils
  from . import config
  from .config import load_config
subject: add version var