What's Changed

• Fix: Reference by @localheinz in https://github.com/nicmart/Tree/pull/82
• Fix: Simplify installation instructions by @localheinz in https://github.com/nicmart/Tree/pull/83
• github-actions(deps): bump actions/checkout from 2 to 3.1.0 by @dependabot in https://github.com/nicmart/Tree/pull/104
• github-actions(deps): bump actions/cache from 2 to 3.0.1 by @dependabot in https://github.com/nicmart/Tree/pull/102
• Fix: Drop support for PHP 7.1 by @localheinz in https://github.com/nicmart/Tree/pull/106
• composer(deps-dev): bump phpunit/phpunit from 7.5.20 to 8.5.30 by @dependabot in https://github.com/nicmart/Tree/pull/107
• Enhancement: Add support for PHP 8.1 by @localheinz in https://github.com/nicmart/Tree/pull/105
• composer(deps-dev): bump ergebnis/license from 1.0.0 to 1.1.0 by @dependabot in https://github.com/nicmart/Tree/pull/109
• composer(deps-dev): bump ergebnis/composer-normalize from 2.8.0 to 2.19.0 by @dependabot in https://github.com/nicmart/Tree/pull/108
• composer(deps-dev): bump ergebnis/php-cs-fixer-config from 2.2.1 to 2.14.0 by @dependabot in https://github.com/nicmart/Tree/pull/110
• Enhancement: Require and use vimeo/psalm by @localheinz in https://github.com/nicmart/Tree/pull/111
• github-actions(deps): bump actions/cache from 3.0.9 to 3.0.10 by @dependabot in https://github.com/nicmart/Tree/pull/112
• Fix PHPStan problems and be explicit by @szepeviktor in https://github.com/nicmart/Tree/pull/84

New Contributors

• @szepeviktor made their first contribution in https://github.com/nicmart/Tree/pull/84

Full Changelog: https://github.com/nicmart/Tree/compare/0.3.1...0.4.0