* Feature - Export customers directly from the "Users" list via bulk action
* Feature - Add static values (such as shop name) to custom export formats
* Tweak - Use direct SQL queries for background jobs to prevent caching issues on certain hosts
* Tweak - Use GET request to dispatch background jobs as a workaround to POST request rate-limiting issues on certain hosts
* Fix - Properly set format settings when loading custom formats in WooCommerce 3.0+
* Dev - Add array keys to export options for easier customization
