* Fix - My Account > Pre-Orders template change to display text when customer has no pre-orders. PR#336.
* Fix - Ensure all pre-orders don't show up when filtering by a product without pre-orders.
* Update - Function load_block_classes() was renamed to woocommerce_pre_orders_load_block_classes() on the root file of the plugin.
* Fix - Fatal Error in Pre-orders listing page which occurred when a filtered product is deleted and page reloaded.
* Fix - Translation of plugin strings/texts.
* Fix - Title, label, description strings are written in sentence case.
* Fix - Strings are being translated using the wrong domain.
