ssapir

Infinite loop in Mean_curvature_flow_skeletonization::contract_geometry

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## Issue Details Function contract_geometry can get stuck in an infinite loop on some meshes. This happens in function Point_inside_vertical_ray_cast::operator() in do-while loop. Functions trace-back: https://github.com/CGAL/cgal/blob/master/Surface_mesh_skeletonization/include/CGAL/Mean_curvature_flow_skeletonization.h#L959 https://github.com/CGAL/cgal/blob/3b8666323e3daa76227b7ff178d889f375c83737/Polygon_mesh_processing/include/CGAL/Side_of_triangle_mesh.h#L270 https://github.com/CGAL/cgal/blob/3b8666323e3daa76227b7ff178d889f375c83737/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Side_of_triangle_mesh/Point_inside_vertical_ray_cast.h#L88 The same...

Add Surface_mesh_skeletonization (with polyhedron 3 implementation)

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Add python support simple & advanced (with parameter setting) polyhedron examlpe from here: https://doc.cgal.org/latest/Surface_mesh_skeletonization/index.html

[Documentation]: question about pynwb.ophys modules

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### What would you like changed or added to the documentation and why? 1. What is the practical difference between pynwb.ophys.Fluorescence and pynwb.ophys.DfOverF? (Both inherits the same classes, and contain...