Change the regex for validating version number on upload

html/typo3conf/ext/ter/class.tx_ter_api.php

@@ -157,7 +157,7 @@ class tx_ter_api
         }
 
         // check for a valid version number
-        if (preg_match('/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/', $extensionInfoData->version) == false) {
+        if (preg_match('/^(0|[1-9]\d{0,2})\.(0|[1-9]\d{0,2})\.(0|[1-9]\d{0,2})$/', $extensionInfoData->version) == false) {
             throw new \T3o\Ter\Exception\Exception(
                 'Your version number "' . htmlspecialchars(
                     $extensionInfoData->version