Resolve "test_multi_component_cluster_vector_permutation fails on multiple system."

Summary of changes

• changed the container type for the allowed permutations from unordered set to a regular set.
• Wrote customized setters and getters in pybind since that was apparently diffucult for pybind to convert.
• I tested master on hebbe which failed but this branch passed
• From a practical stand point nothing changes but the test passes and the code is probably a bit slower

Closes #271 (closed)