Update Composer, update everything

vendor/psy/psysh/.php_cs

@@ -0,0 +1,32 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->in(__DIR__)
+    ->name('.php_cs')
+    ->name('build-manual')
+    ->name('build-phar')
+    ->exclude('build-vendor');
+
+$header = <<<EOF
+This file is part of Psy Shell.
+
+(c) 2012-2018 Justin Hileman
+
+For the full copyright and license information, please view the LICENSE
+file that was distributed with this source code.
+EOF;
+
+return PhpCsFixer\Config::create()
+    ->setRules(array(
+        '@Symfony' => true,
+        'array_syntax' => array('syntax' => 'short'),
+        'binary_operator_spaces' => false,
+        'concat_space' => array('spacing' => 'one'),
+        'header_comment' => array('header' => $header),
+        'increment_style' => array('style' => 'post'),
+        'method_argument_space' => array('keep_multiple_spaces_after_comma' => true),
+        'ordered_imports' => true,
+        'pre_increment' => false,
+        'yoda_style' => false,
+    ))
+    ->setFinder($finder);