added quoted-printable headers when $this->send_multipart has been manually changed to FALSE
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 110f1c2..469a950 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -102,6 +102,7 @@
<li>Removed some unused variables from the code (#4563).</li>
<li>Fixed a bug where <kbd>having()</kbd> was not adding an = into the statement (#4568).</li>
<li>Fixed assorted user guide typos or examples (#4574).</li>
+ <li>Added quoted-printable headers to Email class when the multi-part override is used.</li>
</ul>
<h2>Version 1.6.2</h2>