Release 0.39.0

Improvements 🛠

• Make qiskit_session available top-level. Users can now import it as pennylane_qiskit.qiskit_session. (#593)

Breaking changes 💔

• Remove support for Python 3.9. (#597)

• Upgrade minimum supported version of PennyLane to 0.38.0. (#599)

Documentation 📝

• Added warning in the documentation of qiskit_session due to recent reports of unexpected behavior. (#594)

Bug fixes 🐛

• Fix deprecated import path for QubitDevice. (#584)

Contributors ✍️

This release contains contributions from (in alphabetical order):

Astral Cai, Lillian M. A. Frederiksen, Austin Huang, Mudit Pandey