- Fix an unhelpful warning message about implicit swaps when using optimisation level 2 with {py:class}`AerBackend`
- Add a boolean `perm_warning` argument to {py:func}`tk_to_qiskit` indicating whether to give a warning if the input {py:class}`Circuit` has an implicit qubit permutation.
- Add new level 3 optimisation that uses `GreedyPauliSimp`
- Fix `get_results()` for Aer backends when circuits with different numbers of qubits or postprocessing circuits submitted together.
- Add `timeout` parameter to `get_compiled_circuit` and `get_compiled_circuits`.