Initial release v0.1.0

- Token-level differential privacy for LLMs
  - Integration with Document Privacy API
  - Comprehensive test suite and documentation
  - Examples and Jupyter notebook included

.github/PULL_REQUEST_TEMPLATE.md

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+## Description
+
+Brief description of what this PR does.
+
+## Type of Change
+
+- [ ] Bug fix (non-breaking change that fixes an issue)
+- [ ] New feature (non-breaking change that adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to change)
+- [ ] Documentation update
+- [ ] Refactoring (no functional changes)
+
+## Checklist
+
+- [ ] I have read the [CONTRIBUTING](CONTRIBUTING.md) guidelines
+- [ ] My code follows the project's code style
+- [ ] I have added tests that prove my fix/feature works
+- [ ] All new and existing tests pass
+- [ ] I have updated documentation as needed
+- [ ] My changes don't introduce new warnings
+
+## Testing
+
+Describe how you tested your changes.
+
+## Related Issues
+
+Fixes #(issue number)