Release version 3.2.0

This versions cleans up the code and fixes a few bugs:

* Ability to override some Newsletter values from Recipient List data
* Definitive fix for broken RecipientList edition in backend
* Correct default language value (that could crash newsletter sending)

BREAKING CHANGES
================

* Database structure changed and should be updated, but it is not mandatory

Author: PowerKiKi

ext_emconf.php

@@ -4,7 +4,7 @@
     'title' => 'Newsletter',
     'description' => 'Send any pages as Newsletter and provide statistics on opened emails and clicked links.',
     'category' => 'module',
-    'version' => '3.1.0',
+    'version' => '3.2.0',
     'state' => 'stable',
     'uploadfolder' => 1,
     'author' => 'Ecodev',