Release 3.1.1

What's Changed

• Issue/540 Add back() to the response redirect API by @armanist in #621
• Issue/541 Use back() in the shipped module templates by @armanist in #624
• Issue/627 Run the CI workflow for the maintenance branches by @armanist in #628
• Merge 3.1.x into master by @armanist in #629
• Issue/626 Require Twig again by @armanist in #630
• Merge 3.1.x into master by @armanist in #631
• Issue/622 Upgrade PHPUnit to 10 by @armanist in #632
• Issue/622 Address the review findings of the PHPUnit 10 upgrade by @armanist in #636
• Merge 3.1.x into master by @armanist in #635
• Issue/633 Reduce the repeated base directory lookups by @armanist in #637
• Merge 3.1.x into master by @armanist in #638
• Update logo image source in README.md by @armanist in #639
• Issue/612 Convert the first batch of Enums classes to PHP enums by @armanist in #640
• Issue/612 Accept the column type as text again by @armanist in #642
• Merge 3.1.x into master by @armanist in #641
• Issue/542 Add a GitHub star message to the DemoWeb About page by @armanist in #643
• Merge 3.1.x into master by @armanist in #645
• Set the 3.1.1 release date by @armanist in #646
• Merge 3.1.x into master by @armanist in #647

Full Changelog: 3.1.0...3.1.1