Release v0.2.1 - Bump version for PyPI upload

[nee1k]

Release v0.2.1

Changes

• Bump version from 0.2.0 to 0.2.1 in setup.py
• Patch release for PyPI upload

Context

This version includes the importlib.metadata compatibility fixes from the previous PR (#68) and is ready for PyPI distribution.

What's included in v0.2.1

• ✅ Fixed pkg_resources deprecation warnings with modern importlib.metadata
• ✅ Added setuptools>=65.0.0 dependency for compatibility
• ✅ Backward compatibility maintained for older Python versions
• ✅ Future-proof implementation ready for when pkg_resources is removed

PyPI Upload

This version has been built and is ready for PyPI upload:

• patra_toolkit-0.2.1-py3-none-any.whl
• patra_toolkit-0.2.1.tar.gz

Testing

• ✅ Package validation passed
• ✅ Importlib.metadata compatibility verified
• ✅ No deprecation warnings on Python 3.8+