CAS module now controls whether account creation takes place based on a cas setting, instead of the user account setting.
The module has also been updated to provide a cas logout suggested menu item which logs the user out of the drupal site and then redirects to the cas logout url. (not enabled by default)
From 5.x-1.6:
Fixed "omitted content types" (need to resave setting after this update),
fixed node_access check (particularly helps sending via cron),
fixed processing of category subscriptions,
updated pot file for translations.
Reminder: check access control settings after update when upgrading from 5.x-1.4 or older.