UPGRADE FROM 4.0 to 4.1
=======================

Security
--------

 * The `ContextListener::setLogoutOnUserChange()` method is deprecated and will be removed in 5.0.

SecurityBundle
--------------

 * The `logout_on_user_change` firewall option is deprecated and will be removed in 5.0.

Translation
-----------

 * The `FileDumper::setBackup()` method is deprecated and will be removed in 5.0.
 * The `TranslationWriter::disableBackup()` method is deprecated and will be removed in 5.0.