This is the Flask-Alembic 3.1.1 fix release. It fixes bugs but does not otherwise change behavior and should not result in breaking changes.
PyPI: https://pypi.org/project/Flask-Alembic/3.1.1/
Changes: https://flask-alembic.readthedocs.io/page/changes/#version-3-1-1
flask db merge
merges all heads by default and does not require an argument.