UPGRADE FROM 4.x to 5.0
=======================

Security
--------

 * The `ContextListener::setLogoutOnUserChange()` method has been removed.

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

 * The `logout_on_user_change` firewall option has been removed.

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

 * The `FileDumper::setBackup()` method has been removed.
 * The `TranslationWriter::disableBackup()` method has been removed.