Fixed upgrade check

src/psm/Util/Install/Installer.php

@@ -78,7 +78,7 @@ class Installer {
 
 		// different DB version, check if the version requires any changes
 		// @todo this is currently a manual check for each version, similar to upgrade().. not a clean way
-		if(version_compare($version_db, '3.2.0', '<')) {
+		if(version_compare($version_db, PSM_VERSION, '<')) {
 			return true;
 		} else {
 			// change database version to current version so this check won't be required next time