v0.3.0

Full Changelog: v0.2.0...v0.3.0

New Metrics Added

1. Cyclomatic Complexity Distribution (Easy, Moderate, High).
2. Maximum Nesting Depth for functions.
3. Maintainability Index (scale from 0 to 100).
4. Improved Halstead Complexity placeholders for potential future addition.

This tool now provides insights into maintainability and risk.