Version update 5.9.0-rc5

Author: haruka-7

core/lib/config.php

@@ -7,7 +7,7 @@
 
 const PHP_VERSION_MIN = '5.6.34';
 const PLX_DEBUG = true;
-const PLX_VERSION = '5.9.0-rc4';
+const PLX_VERSION = '5.9.0-rc5';
 const PLX_VERSION_DATA = '5.8.1';
 const PLX_URL_REPO = 'https://www.pluxml.org';
 const PLX_URL_VERSION = PLX_URL_REPO.'/download/latest-version.txt';