Incompatible with Python3.10 and/or numpy

[langthom]

After an installation via pip (Python 3.10, Ubuntu xy), I got the following stack trace when trying to extract the topology from the LBC.

2023-11-08 07:43:01,538 - PCD #points: 2669
Current volume ratio 1.0. Contraction weights 2048.0. Attraction weights 0.5. Progress LBC: 10%|████████▎ | 2/20 [00:00<00:02, 7.38it/s]Contraction is Done.
2023-11-08 07:43:02,010 - Contraction is Done.
Current volume ratio 1.0. Contraction weights 2048.0. Attraction weights 0.5. Progress LBC: 10%|████████▎ | 2/20 [00:00<00:03, 5.53it/s]
/home/me/pcskeletor_test/o3d_env/lib/python3.10/site-packages/mistree/mst/branches.py:54: FutureWarning: In the future np.bool will be defined as the corresponding NumPy scalar.
mask_end = np.ones(index_branch_end.shape, dtype=np.bool)
Traceback (most recent call last):
File "/home/me/pcskeletor_test/pcskeletor.py", line 34, in
extract_skeleton(pcd)
File "/home/me/pcskeletor_test/pcskeletor.py", line 20, in extract_skeleton
lbc.extract_topology()
File "/home/me/pcskeletor_test/o3d_env/lib/python3.10/site-packages/pc_skeletor/laplacian.py", line 287, in extract_topology
self.skeleton_graph = self.__extract_skeletal_graph(skeletal_points=skeleton_points)
File "/home/me/pcskeletor_test/o3d_env/lib/python3.10/site-packages/pc_skeletor/laplacian.py", line 241, in __extract_skeletal_graph
_, _, _, _, edge_index, _ = extract_mst(points=skeletal_points)
File "/home/me/pcskeletor_test/o3d_env/lib/python3.10/site-packages/pc_skeletor/laplacian.py", line 237, in extract_mst
degree, edge_length, branch_length, branch_shape, edge_index, branch_index = mst.get_stats(include_index=True, k_neighbours=self.graph_k_n)
File "/home/me/pcskeletor_test/o3d_env/lib/python3.10/site-packages/mistree/mst/get_mst_class.py", line 408, in get_stats
return self._get_stats(include_index=include_index, sub_divisions=sub_divisions,
File "/home/me/pcskeletor_test/o3d_env/lib/python3.10/site-packages/mistree/mst/get_mst_class.py", line 370, in get_stats
self.get_branches(sub_divisions=sub_divisions)
File "/home/me/pcskeletor_test/o3d_env/lib/python3.10/site-packages/mistree/mst/get_mst_class.py", line 198, in get_branches
branch_index, rejected_branch_index = branches.get_branch_index(self.edge_index, self.edge_degree)
File "/home/me/pcskeletor_test/o3d_env/lib/python3.10/site-packages/mistree/mst/branches.py", line 54, in get_branch_index
mask_end = np.ones(index_branch_end.shape, dtype=np.bool)
File "/home/me/pcskeletor_test/o3d_env/lib/python3.10/site-packages/numpy/init.py", line 324, in getattr
raise AttributeError(former_attrs[attr])
AttributeError: module 'numpy' has no attribute 'bool'.
np.bool was a deprecated alias for the builtin bool. To avoid this error in existing code, use bool by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use np.bool_ here.
The aliases was originally deprecated in NumPy 1.20; for more details and guidance see the original release note at:
https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations. Did you mean: 'bool'?

So it seems that the bool type needs to be addressed properly, or depending on the numpy version. Note that because I use Python 3.10, downgrading to numpy<=1.20 does not work as that version does not support Python 3.10.

[meyerls]

Please see issue #13