Disable operator_linebreak and modifier_keywords rules (#50)

These rules were causing formatting issues with the existing codebase
and are not essential for code quality in this project.

Author: sanmai

.php-cs-fixer.dist.php

@@ -6,6 +6,8 @@
         'visibility_required' => ['elements' => ['property', 'method']], // Exclude 'const' for PHP 5.6 compatibility
         'trailing_comma_in_multiline' => ['elements' => ['arrays']],
         'method_argument_space' => false,
+        'operator_linebreak' => false,
+        'modifier_keywords' => false,
     ])
     ->setFinder(
         PhpCsFixer\Finder::create()