Check get_distance() between two segments.
Test shortest segment corner cases.
Test get_transformation_from_first_triangle_to_second().
Test read_pts error handling.
Get IO of Sphere3Ds.
Test random vectors on a 2D sphere (circle).
Check handling of requests for zero points.
Test surface cover of cone.
Test VectorKD metrics.
Don't report code coverage of C++ tests.
Remove unused functions.