Laravel 8 shift squash - #3029

Shift automatically applies the Laravel coding style - which uses the PSR-2 coding style as a base with some minor additions.

You may customize the adopted coding style by adding a [PHP CS Fixer][1] or [PHP CodeSniffer][2] config to your project root. Feel free to use [Shift's Laravel ruleset][3] to help you get started.

For more information on customizing the code style applied by Shift, [watch this short video][4].

[1]: https://github.com/FriendsOfPHP/PHP-CS-Fixer
[2]: https://github.com/squizlabs/PHP_CodeSniffer
[3]: https://gist.github.com/laravel-shift/cab527923ed2a109dda047b97d53c200
[4]: https://laravelshift.com/videos/shift-code-style

Laravel 8 adopts the tuple syntax for controller actions. Since the old options array is incompatible with this syntax, Shift converted them to use modern, fluent methods.

In an effort to make upgrading the constantly changing config files
easier, Shift defaulted them and merged your true customizations -
where ENV variables may not be used.

From the [PHPUnit 8 release notes][1], the `TestCase` methods below now declare a `void` return type:

- `setUpBeforeClass()`
- `setUp()`
- `assertPreConditions()`
- `assertPostConditions()`
- `tearDown()`
- `tearDownAfterClass()`
- `onNotSuccessfulTest()`

[1]: https://phpunit.de/announcements/phpunit-8.html

Laravel 8.x Shift