Fix warnings, update to latest versions

ordernumbers_woocommerce_basic.php

@@ -376,7 +376,8 @@ class OpenToolsOrdernumbersBasic {
 	 * Handle the "Assign a new order number" action from the edit order page in the backend
 	 */
 	public function order_action_assign_new_ordernumber( $order ) {
-		$number = $this->generateNumber($order->get_id(), $order, 'ordernumber');
+		$wc_ver3 = !version_compare(WC_VERSION, '2.7', '<');
+		$number = $this->generateNumber($wc_ver3?$order->get_id():$order->id, $order, 'ordernumber');
 	}
 		
 	/** 

plugin-update-checker/vendor/Parsedown.php

@@ -1409,7 +1409,7 @@ class Parsedown
 
             if (isset($Element['handler']))
             {
-                $markup .= $this->$Element['handler']($Element['text']);
+                $markup .= $this->{$Element['handler']}($Element['text']);
             }
             else
             {

readme.txt

@@ -3,7 +3,7 @@ Plugin Name: Ordernumbers for WooCommerce
 Contributors: opentools
 Tags: WooCommerce, Order numbers, orders
 Requires at least: 4.0
-Tested up to: 4.8
+Tested up to: 4.9.2
 Stable tag: 1.4.3
 License: GPLv3 or later
 License URI: http://www.gnu.org/licenses/gpl.html

woocommerce-advanced-ordernumbers.php

@@ -11,7 +11,7 @@
  * License: GPL2+
  * Network: true
  * WC requires at least: 2.2
- * WC tested up to: 3.1
+ * WC tested up to: 3.2.6
 */
 
 if ( ! defined( 'ABSPATH' ) ) { 

woocommerce-basic-ordernumbers.php

@@ -10,7 +10,7 @@
  * License: GPL2+
  * Network: true
  * WC requires at least: 2.2
- * WC tested up to: 3.1
+ * WC tested up to: 3.2.6
 */
 
 if ( ! defined( 'ABSPATH' ) ) {