Prepare release

Author: sebastianbergmann

ChangeLog-6.4.md

@@ -2,7 +2,7 @@
 
 All notable changes of the PHPUnit 6.4 release series are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
-## [6.4.3] - 2017-MM-DD
+## [6.4.3] - 2017-10-16
 
 ### Fixed
 

src/Runner/Version.php

@@ -32,7 +32,7 @@ public static function id()
         }
 
         if (self::$version === null) {
-            $version       = new VersionId('6.4.2', \dirname(\dirname(__DIR__)));
+            $version       = new VersionId('6.4.3', \dirname(\dirname(__DIR__)));
             self::$version = $version->getVersion();
         }