v2.1.0: Testing Infrastructure & Project Architecture

Added

• Comprehensive test suite with pytest
• GitHub Actions CI pipeline
• Pre-commit hooks for code quality
• Test coverage reporting
• Project restructuring with clean architecture
• New directory structure for better organization
• Sample PDFs in dedicated folder

Changed

• Moved all source code to src/ directory
• Updated dependencies to latest compatible versions
• Improved README with testing documentation
• Added test status badge
• Reorganized PDF storage structure

Fixed

• Dependency conflicts with pydantic
• ONNX runtime compatibility issues
• Test coverage configuration