[Mime] deprecate attach/embed methods in favor of Email::addPart()

Author: fabpot

Tests/Functional/Bundle/TestBundle/Controller/EmailController.php

@@ -15,6 +15,7 @@
 use Symfony\Component\Mailer\MailerInterface;
 use Symfony\Component\Mime\Address;
 use Symfony\Component\Mime\Email;
+use Symfony\Component\Mime\Part\DataPart;
 
 class EmailController
 {
@@ -25,15 +26,15 @@ public function indexAction(MailerInterface $mailer)
             ->addCc('cc@symfony.com')
             ->text('Bar!')
             ->html('<p>Foo</p>')
-            ->attach(file_get_contents(__FILE__), 'foobar.php')
+            ->addPart(new DataPart(file_get_contents(__FILE__), 'foobar.php'))
         );
 
         $mailer->send((new Email())->to('fabien@symfony.com', 'thomas@symfony.com')->from('fabien@symfony.com')->subject('Foo')
             ->addReplyTo(new Address('me@symfony.com', 'Fabien Potencier'))
             ->addCc('cc@symfony.com')
             ->text('Bar!')
             ->html('<p>Foo</p>')
-            ->attach(file_get_contents(__FILE__), 'foobar.php')
+            ->addPart(new DataPart(file_get_contents(__FILE__), 'foobar.php'))
         );
 
         return new Response();