New Features
- Removed dependency on `croniter` package and replaced it with a pure Python implementation.
- Refactored code to use `click` instead of `argparse` for command line argument parsing.
Enhancements
- Improved code readability with docstrings and comments throughout the codebase.
- Optimized code for better performance and maintainability.
Bug Fixes
- Fixed issues with package installation and missing dependencies.
Upgrade Notes
To upgrade to this version, please follow these steps:
1. Uninstall the previous version of the package using `pip uninstall runat`
2. Install the new version using `pip install runat --upgrade`