1.3.1

Build(deps-dev): Bump phpstan/phpstan-strict-rules from 0.11 to 0.11.1 (#203), by @dependabot-preview[bot]

• Build(deps-dev): Bump phpstan/phpstan-deprecation-rules from 0.11 to 0.11.2 (#204), by @dependabot-preview[bot]
• Build(deps-dev): Bump symfony/filesystem from 4.3.3 to 4.3.4 (#205), by @dependabot-preview[bot]
• Build(deps-dev): Bump localheinz/php-cs-fixer-config from 1.22.1 to 1.23.0 (#206), by @dependabot-preview[bot]
• Fix: Use localheinz/diff instead of sebastian/diff (#207), by @localheinz