Version 1.7.0

[1.7.0] - 2023-01-20

Added

• Add a __getattr__ method to BaseMagicDotPath. It can fix the mypy errors: attr-defined and no-any-return when we use lambda function in MagicDotPath.
• Add documentation for string functions: lower(), upper(), title().

Changed

• Update ruff and refactor __init__.py