1.1.1

• Fix: Changelog (#147), by @localheinz
• Fix: Changelog (#149), by @localheinz
• Enhancement: Update localheinz/php-cs-fixer-config (#152), by @localheinz
• Fix: Remove AppVeyor (#153), by @localheinz
• Fix: Update phpstan/phpstan (#155), by @localheinz
• Enhancement: Require phpstan/phpstan-deprecation-rules (#156), by @localheinz
• Fix: Update localheinz/composer-json-normalizer (#157), by @localheinz