드디어 ci4에서도 쿠키 라이브러리를 정상적으로 사용할 수 있군요!

- A lot of clean up in Config, including splitting out some classes like the new "Cookie"

- Revamped testing tools using "magic traits", making it much easier to optimize tests

- "Entity" has moved to its own namespace, with a new set of support classes

- Most error messages and displays have been improved to help track down those pesky bugs

- Core overrides are here! Use your Config\Services file to inject your own core classes