Released OpenCOR 0.8.3.

Released OpenCOR 0.8.2.

Released OpenCOR 0.8.1.

Released OpenCOR 0.8.

General: have OpenCOR signed on Windows.

CMake: addressed various issues.

CD: use New Zealand time.

Linux: make sure that we package our copy of Python.

Python: added a way to release values (retrieved as a NumPy array) th…

…at are not needed anymore.

Python: upgraded to version to 3.12.