v4.4.2 bug fix released

Hi, all.

We are pleased to announce the release of v4.4.2.

This release fixes 17 bugs.

The following relatively important bug fixes are included:
- CI returns "200 OK" when PageNotFound
- base_url()/site_url() does not work on CLI
- named routes don't work with spark
- spark may not show exceptions or show backtrace as json
- spark routes may show incorrect route names

With this version, 4.4 is now pretty stable. All pre-4.4 users are also encouraged to upgrade.

ChangeLog: https://codeigniter.com/user_guide/chang...4.4.2.html
Upgrading Guide: https://codeigniter.com/user_guide/insta...e_442.html

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