Update PHP-CS-Fixer ruleset

Author: mpdude

.php_cs.dist

@@ -9,6 +9,9 @@ return PhpCsFixer\Config::create()
         'braces' => array('allow_single_line_closure' => true),
         'heredoc_to_nowdoc' => false,
         'phpdoc_annotation_without_dot' => false,
+        'php_unit_test_annotation' => ['style' => 'annotation'],
+        'php_unit_method_casing' => ['case' => 'snake_case'],
+        'global_namespace_import' => ['import_classes' => true, 'import_constants' => false, 'import_functions' => false],
     ])
     ->setRiskyAllowed(true)
     ->setFinder(