⬆️ Update intl library.

Update intl library from v0.4? (2014) to v0.7.4 (2016).
Use global composer autoloader now.

vendor/composer/autoload_psr4.php

@@ -19,4 +19,5 @@ return array(
     'Psr\\Log\\' => array($vendorDir . '/psr/log/Psr/Log'),
     'League\\HTMLToMarkdown\\' => array($vendorDir . '/league/html-to-markdown/src'),
     'Hubzilla\\' => array($baseDir . '/include'),
+    'CommerceGuys\\Intl\\' => array($vendorDir . '/commerceguys/intl/src'),
 );