Update rules

Author: HamedDarragi

PhpFixerRuleResolver.php

@@ -28,7 +28,7 @@ public function getRules($flags, $onlyAvailableOnes, $minimumPhpVersion = '')
             'blank_line_before_statement' => true,
             'braces' => true,
             'cast_spaces' => true,
-            'class_attributes_separation' => true,
+            'class_attributes_separation' => ['elements'=>['const'=>'none','method'=>'one','property'=>'none','trait_import'=>'one']],
             'class_definition' => true,
             'combine_consecutive_issets' => true,
             'combine_consecutive_unsets' => true,
@@ -75,6 +75,7 @@ public function getRules($flags, $onlyAvailableOnes, $minimumPhpVersion = '')
             'no_leading_namespace_whitespace' => true,
             'no_mixed_echo_print' => true,
             'no_multiline_whitespace_around_double_arrow' => true,
+            'no_null_property_initialization' => true,
             'no_php4_constructor' => true,
             'no_short_bool_cast' => true,
             'no_singleline_whitespace_before_semicolons' => true,