- Introduced `Environment`, `EnvShared`, and `TestEnv` classes for managing environment variables. - Added casting functions for various data types in a new `cast.py` module. - Updated README with usage examples and class descriptions.
- Introduced `Environment`, `EnvShared`, and `TestEnv` classes for managing environment variables. - Added casting functions for various data types in a new `cast.py` module. - Updated README with usage examples and class descriptions.