Bump python to 3.13

• Bump py versions to 3.13

Clean release bumping to py 3.13

• Clean release of latest code adding py 3.13

General maintenance

Updated to use py 3.9, 3.10, 3.11, 3.12
Fixed small bugs in variables loading
Cleaned up code with black and flake8

General maintenance

Updated to use py 3.9, 3.10, 3.11, 3.12
Fixed small bugs in variables loading
Cleaned up code with black and flake8

General maintenance

Updated to use py 3.9, 3.10, 3.11, 3.12
Fixed small bugs in variables loading
Cleaned up code with black and flake8

Fix docs pipeline

New release with corrected ci pipelines

1st release

First release of PBN