v4.8
* Added: Run Scheduled Export meta box to Edit Scheduled Exports screen
* Fixed: Repalced hardcoded prefix with $wpdb->prefix (thanks Michael)
* Fixed: Removed duplicate code for TM EPO causing the order item data to be overwriten with blank data
* Fixed: Fixed bug found in new Scheduled Export meta box
* Added: Key file SFTP authentication to Scheduled Exports (thanks Ivano)
* Added: Filter to disable multiple tax rate fields in Order Export (thanks Chris)
* Updated: Error message for not running XML, RSS and JSON formats with UTF-8 encoding (thanks Adam)
* Added: Filter to add custom worksheet name (thanks Yoo)
