old_contents: from mechanic import default_registry
  from mechanic.storage import Storage
  from mechanic.observer import UpdateObserver
  
  
  Storage.set_defaults(ignore={},
                       check_on_startup=True,
                       cache={},
                       cached_at=0.0,
                       ignore_patch_updates=False,
                       registries=[default_registry])
  
  UpdateObserver('applicationDidFinishLaunching',
                 'applicationDidBecomeActive')
  
new_contents: from mechanic import default_registry
  from mechanic.storage import Storage
  from mechanic.observer import UpdateObserver
  
  
  Storage.set_defaults(ignore={},
                       cache={},
                       check_on_startup=True,
                       ignore_patch_updates=False,
                       registries=[default_registry])
  
  UpdateObserver('applicationDidFinishLaunching',
                 'applicationDidBecomeActive')
  
subject: remove unused default