Updated changelog to reflect latest changes
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 38c6d05..c0f1566 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -264,6 +264,7 @@
- Internal method ``_prep_q_encoding()`` now utilizes PHP's *mbstring* and *iconv* extensions (when available) and no longer has a second (``$from``) argument.
- Added an optional parameter to ``print_debugger()`` to allow specifying which parts of the message should be printed ('headers', 'subject', 'body').
- Added SMTP keepalive option to avoid opening the connection for each ``Email::send()``. Accessible as ``$smtp_keepalive``.
+ - Public method ``set_header()`` now filters the input by removing all "\\r" and "\\n" characters.
- :doc:`Pagination Library <libraries/pagination>` changes include:
- Added support for the anchor "rel" attribute.
- Added support for setting custom attributes.