New Feature: compatibility with the Gravity Forms Export Add-On
improvement: fallback to PclZip if ZipArchive isn't available
improvement: add support for Cyrillic and Greek characters in element names
bugfix: some output not correctly escaped
bugfix: in some cases, export files are cached when downloaded via a direct link
bugfix: error when exporting attributes
bugfix: notice when saving client mode settings
bugfix: error on PHP 8 when exports are corrupt
bugfix: error when exporting custom field in simple XML
