v0.1.6 - Improved code quality and documentation

Changes

• Improved code quality and documentation:
  • Added comprehensive docstrings with Examples sections
  • Added proper type hints for all functions and classes
  • Added Raises sections in docstrings for error handling
  • Improved error handling with custom exceptions
  • Enhanced code organization and module structure
• Updated project structure to use flat directory layout
• Improved README with current project structure and standards

Fixes

• Function and method signatures in docstrings
• Error handling in dependency management
• Type hints in graph building and analysis
• Code formatting and consistency