old_contents: __all__ = ["skeletonizer", "skeleton_analyser", "tree"]
  
  __version__ = "1.8.0"
  
  from . import skeleton_analyser
  from .skeleton_analyser import SkeletonAnalyser
  from .skeletonizer import skelet3d
  
new_contents: __all__ = ["skeletonizer", "skeleton_analyser"]
  
  __version__ = "1.8.0"
  
  from . import skeleton_analyser
  from .skeleton_analyser import SkeletonAnalyser
  from .skeletonizer import skelet3d
  
subject: fix missing tree