* Require statamic/cms dev-master for now

We can change this to `^6.0` when an alpha/beta is tagged.

* [4.x] Drop Laravel 10 Support (#200)

* Remove Testbench 8 from composer.json

* Remove PHPUnit 10

* Remove Laravel 10 and PHP 8.1 from testing matrix

* Remove toStringFormat handling for Carbon 2 (#201)

* [4.x] Improved Timezone Handling (#197)

* Take the "display timezone" into account when setting Carbon string format

* Use `Statamic::displayTimezone()`

* Add config to enforce trailing slashes during generation.

* Fix for 404 not generating.

* Assemble absolute URL instead.

* Fix `is404()` logic for hardcoded 404.html destination.

* Handle config (tests still wip).

* Add basic test coverage for generated URLs.

* Add test coverage for our 404 fix.

* Remove experimental note. We can just fix bugs as they're reported.

* Temporary composer constraint until we tag Statamic v6.

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Co-authored-by: Duncan McClean <duncan@duncanmcclean.com>