Please declare “High-Performance order storage” compatibility

Hi, recently WooCommerce introduced long awaited change to orders data structure, they call it “High-Performance order storage”. The feature is opt-in now but will become switched on by default in some time. They advice plugin authors to declare compatibility or incompatibility, please see https://github.com/woocommerce/woocommerce/wiki/High-Performance-Order-Storage-Upgrade-Recipe-Book#declaring-extension-incompatibility. Can you please study the information provided by WooCommerce devs and add suggested code to your plugin.
Thank you for developing “Mail Debug for WooCommerce”.