add custom locale per recipient

src/PushTemplate.php

@@ -138,6 +138,10 @@ class PushTemplate implements \JsonSerializable
                     $data['unsubscribe_url'] = $recipient['unsubscribe_url'];
                 }
 
+                if (! empty($recipient['locale'])) {
+                    $data['locale'] = $recipient['locale'];
+                }
+
                 $this->recipients[] = $data;
             }
         }
@@ -152,7 +156,7 @@ class PushTemplate implements \JsonSerializable
      * @param string|null $unsubscribe_url
      * @return $this
      */
-    public function addRecipient(string $email, string $name = null, array $parameters = [], string $unsubscribe_url = null): PushTemplate
+    public function addRecipient(string $email, string $name = null, array $parameters = [], string $unsubscribe_url = null, string $locale = null): PushTemplate
     {
         $data = [
             'email' => $email
@@ -170,6 +174,10 @@ class PushTemplate implements \JsonSerializable
             $data['unsubscribe_url'] = $unsubscribe_url;
         }
 
+        if (! is_null($locale)) {
+            $data['locale'] = $locale;
+        }
+
         $this->recipients[] = $data;
 
         return $this;