old_contents: from nistbeacon.nistbeacon import NistBeacon
  from nistbeacon.nistbeaconvalue import NistBeaconValue
  
  __all__ = ['NistBeacon', 'NistBeaconValue']
  __version__ = '0.9.0'
  
new_contents: from .nistbeacon import NistBeacon
  from .nistbeaconvalue import NistBeaconValue
  
  __all__ = ['NistBeacon', 'NistBeaconValue']
  __version__ = '0.9.0'
  
subject: Change init's imports