The module assumes the PHP Intl extension is installed and it uses the Transliterator class without first checking the extension has been installed

When release 7.x-2.4 is installed, it causes the following fatal error.

Error: Class 'Transliterator' not found in rename_admin_paths_url_inbound_alter()

It happens because the Transliterator class is implemented by the Intl extension, an extension Drupal 7 doesn't require. Since that is required for the module to be considered secure, it should not be possible to install the module without the Intl extension. The module should give an error when the extension isn't found.