Check heredoc/nowdoc indentation (#38)

Avoid string literals with double quotes (#37)

Disallow useless string concatenation (#35)

Replace deprecated PHP-CS-Fixer rule (#33)

* `new_with_braces` is deprecated in favor of `new_with_parentheses`

* require more recent version of php-cs-fixer; `new_with_parentheses` was introduced in v3.32.0

Refresh package (#32)

* adapt to changes in php_codesniffer 3.8
* replace outdated properties in DeclareStrictTypes with current ones
* allow v1.0 of phpcodesniffer-composer-installer

enforce indentation of array items (#31)

* enforce indentation of array items

* don't allow blank lines after and before array braces (and others)

* add an invalid fixture

Allow `@var mixed` annotations (#30)

PHP CS Fixer: Enable no_superfluous_phpdoc_tags (#29)

Use correct path to strict rules file (#28)

Simplify bootstrapping PHP-CS-Fixer config (#25)

* add a method to create a PhpCsFixer config with defaults
* bump minimum php version to 8.1
* upgrade PHPUnit