5.1.0

Feature:

• Support Django 5.0 db_default attribute (issue #275)
• Allow ignoring the failures of sqlmigrate commands, with --ignore-sqlmigrate-errors option (issue #274)

Bug:

• Don't detect 'IS NOT NULL' as backward incompatible changes (issue #263)
• Don't consider UNIQUE INDEX creation as making a column not nullable

Miscellaneous:

• Migrated from setup.py and setup.cfg to pyproject.toml
• Add support for Python 3.12
• Add support for Django 5.0
• Avoid git command injections
• Remove Codecov integration