Add missing since tags

Author: JPry

src/Tickets/Commerce/Cart/Abstract_Cart.php

@@ -222,6 +222,8 @@ public function get_hash() {
 	/**
 	 * Add the full set of parameters to the items in the cart.
 	 *
+	 * @since TBD
+	 *
 	 * @param array $items The items in the cart.
 	 *
 	 * @return array The items in the cart with the full set of parameters.

src/Tickets/Commerce/Cart/Agnostic_Cart.php

@@ -366,6 +366,8 @@ public function process( array $data = [] ) {
 	/**
 	 * Add the full set of parameters to the items in the cart.
 	 *
+	 * @since TBD
+	 *
 	 * @param array $items The items in the cart.
 	 *
 	 * @return array The items in the cart with the full set of parameters.
@@ -403,6 +405,8 @@ function ( $item ) {
 	/**
 	 * Add the ticket parameters to the item in the cart.
 	 *
+	 * @since TBD
+	 *
 	 * @param array $item The item in the cart.
 	 *
 	 * @return ?array The item in the cart with the full set of parameters.