4.1.0

What's Changed

Bug Fixes

• Fixed stray characters in FlatDict.__repr__ output

Improvements

• Added type annotations to FlatDict and FlatterDict
• Converted from single module (flatdict.py) to package (flatdict/)
• Removed __version__ attribute (use importlib.metadata.version('flatdict') instead)
• Replaced == with is for type comparisons in FlatterDict
• Added exception chaining in FlatterDict.__setitem__
• Removed Python < 3.6 compatibility code

Tooling & Infrastructure

• Migrated from pip to uv for dependency management
• Switched test runner from unittest discovery to pytest
• Switched to OIDC trusted publishing for PyPI deploys
• Converted from setup.py/setup.cfg to pyproject.toml with hatchling
• Switched to hatch-vcs for version management
• Upgraded CI to use astral-sh/setup-uv@v5 and codecov/codecov-action@v5
• Renamed default branch from master to main
• Widened Python support to 3.10–3.14