This release adds the path simulation framework proposed in
L. Burgholzer, A.Ploier, and R. Wille, "[Exploiting Arbitrary Paths for the Simulation of Quantum Circuits with Decision Diagrams](https://iic.jku.at/files/eda/2022_date_exploiting_arbitrary_paths_simulation_quantum_circuits_decision_diagrams.pdf)," in Design, Automation and Test in Europe (DATE), 2022.
To this end, two new Qiskit backends are introduced: the `path_sim_qasm_simulator` and the `path_sim_statevector_simulator`.
For further details, see the README and the corresponding paper.