update PHP dependencies

vendor/composer/ClassLoader.php

@@ -279,7 +279,7 @@ class ClassLoader
      */
     public function setApcuPrefix($apcuPrefix)
     {
-        $this->apcuPrefix = function_exists('apcu_fetch') && ini_get('apc.enabled') ? $apcuPrefix : null;
+        $this->apcuPrefix = function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? $apcuPrefix : null;
     }
 
     /**
@@ -377,7 +377,7 @@ class ClassLoader
             $subPath = $class;
             while (false !== $lastPos = strrpos($subPath, '\\')) {
                 $subPath = substr($subPath, 0, $lastPos);
-                $search = $subPath.'\\';
+                $search = $subPath . '\\';
                 if (isset($this->prefixDirsPsr4[$search])) {
                     $pathEnd = DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $lastPos + 1);
                     foreach ($this->prefixDirsPsr4[$search] as $dir) {

vendor/composer/autoload_real.php

@@ -13,6 +13,9 @@ class ComposerAutoloaderInitDontChange
         }
     }
 
+    /**
+     * @return \Composer\Autoload\ClassLoader
+     */
     public static function getLoader()
     {
         if (null !== self::$loader) {

vendor/paragonie/random_compat/phpunit-autoload.php

@@ -0,0 +1,14 @@
+<?php
+
+require_once __DIR__ . '/psalm-autoload.php';
+
+/**
+ * This is necessary for PHPUnit on PHP >= 5.3
+ *
+ * Class PHPUnit_Framework_TestCase
+ */
+if (PHP_VERSION_ID >= 50300) {
+    if (!class_exists('PHPUnit_Framework_TestCase')) {
+        require_once __DIR__ . '/other/phpunit-shim.php';
+    }
+}