Changelog (Auto Generated by Claude Code)

## [1.6.1] - 2025-08-09

### Fixed
- Fixed Excel file reading issue in `get_data_info` function by adding missing `openpyxl` dependency
- Resolved compatibility issues with Excel (.xlsx) file formats

### Added
- Added `openpyxl>=3.1.5` to project dependencies for Excel file support

### Security
- Updated license from MIT to Apache License 2.0 for better legal protection and compatibility

### Changed
- **License**: Migrated from MIT License to Apache License 2.0
  - Updated LICENSE file to Apache 2.0 full text
  - Updated all documentation files (README, README-cn, README-fr, README-sp)
  - Updated CITATION.cff license field
  - Updated pyproject.toml license field
  - Updated Statement.md in all languages (中文, English, Français)
  - Updated all license badges from MIT to Apache 2.0
  - Ensured consistent Apache 2.0 licensing across entire project

## [1.6.0] - 2025-06-28

### Added
- Initial release with core Stata-MCP functionality
- Support for regression analysis via LLM integration
- Multi-language documentation (English, Chinese, French, Spanish)
- PyPI package distribution
- Jupyter integration support
- Web UI interface
- Cross-platform support (macOS, Windows, Linux)

### Features
- Stata command execution via MCP protocol
- Data analysis automation
- Regression model building assistance
- Statistical output interpretation
- Code generation and debugging support