Add changelog entry for CSRF status code; remove line at EOF
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 0895246..ec38a3e 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -506,6 +506,7 @@
       -  Added ``$config['csrf_regeneration']``, which makes token regeneration optional.
       -  Added ``$config['csrf_exclude_uris']``, which allows you list URIs which will not have the CSRF validation methods run.
       -  Modified method ``sanitize_filename()`` to read a public ``$filename_bad_chars`` property for getting the invalid characters list.
+      -  Return status code of 403 instead of a 500 if CSRF protection is enabled but a token is missing from a request.
 
    -  :doc:`Language Library <libraries/language>` changes include: