2.4.0

• Build(deps-dev): Bump ergebnis/phpstan-rules from 0.14.3 to 0.14.4 (#381), by @dependabot-preview[bot]
• Build(deps-dev): Bump phpstan/phpstan from 0.12.14 to 0.12.15 (#382), by @dependabot-preview[bot]
• Build(deps-dev): Bump phpstan/phpstan from 0.12.15 to 0.12.16 (#383), by @dependabot-preview[bot]
• Build(deps-dev): Bump phpstan/phpstan from 0.12.16 to 0.12.17 (#384), by @dependabot-preview[bot]
• Build(deps-dev): Bump phpstan/phpstan from 0.12.17 to 0.12.18 (#386), by @dependabot-preview[bot]
• Build(deps-dev): Bump vimeo/psalm from 3.9.5 to 3.10.0 (#387), by @dependabot-preview[bot]
• Build(deps-dev): Bump vimeo/psalm from 3.10.0 to 3.10.1 (#388), by @dependabot-preview[bot]
• Fix README.md links (#385), by @kubawerlos
• Build(deps-dev): Bump symfony/filesystem from 4.4.5 to 4.4.6 (#389), by @dependabot-preview[bot]
• Build(deps-dev): Bump psalm/plugin-phpunit from 0.9.0 to 0.9.1 (#390), by @dependabot-preview[bot]
• Build(deps-dev): Bump symfony/filesystem from 4.4.6 to 4.4.7 (#391), by @dependabot-preview[bot]
• Build(deps-dev): Bump phpstan/extension-installer from 1.0.3 to 1.0.4 (#392), by @dependabot-preview[bot]
• Build(deps-dev): Bump psalm/plugin-phpunit from 0.9.1 to 0.9.2 (#393), by @dependabot-preview[bot]
• Build(deps-dev): Bump psalm/plugin-phpunit from 0.9.2 to 0.10.0 (#394), by @dependabot-preview[bot]
• Build(deps-dev): Bump ergebnis/php-cs-fixer-config from 2.1.0 to 2.1.1 (#396), by @dependabot-preview[bot]
• Enhancement: Synchronize with ergebnis/php-library-template (#397), by @localheinz
• Build(deps-dev): Bump vimeo/psalm from 3.10.1 to 3.11.0 (#398), by @dependabot-preview[bot]
• Build(deps-dev): Bump vimeo/psalm from 3.11.0 to 3.11.1 (#399), by @dependabot-preview[bot]
• Fix: Synchronize with ergebnis/php-library-template (#402), by @localheinz
• Build(deps-dev): Bump phpstan/phpstan-phpunit from 0.12.6 to 0.12.7 (#400), by @dependabot-preview[bot]
• Build(deps-dev): Bump vimeo/psalm from 3.11.1 to 3.11.2 (#401), by @dependabot-preview[bot]
• Build(deps-dev): Bump ergebnis/php-cs-fixer-config from 2.1.1 to 2.1.2 (#403), by @dependabot-preview[bot]
• Build(deps-dev): Bump phpstan/phpstan-phpunit from 0.12.7 to 0.12.8 (#404), by @dependabot-preview[bot]
• Build(deps): Bump ergebnis/json-normalizer from 0.11.0 to 0.12.0 (#405), by @dependabot-preview[bot]
• Enhancement: Show validation error messages (#406), by @localheinz
• Fix: Remove unused method (#407), by @localheinz
• Build(deps-dev): Bump phpstan/phpstan from 0.12.18 to 0.12.19 (#408), by @dependabot-preview[bot]
• Enhancement: Add schema target to Makefile (#409), by @localheinz
• Enhancement: Synchronize with ergebnis/php-library-template (#410), by @localheinz
• Fix: Update composer/composer (#411), by @localheinz
• Fix: Update composer/composer (#413), by @localheinz
• Enhancement: Make plugin compatible with composer/composer:^2 (#412), by @localheinz