add note about fixed utf-8 decoding (disallow non-shortest-form and surrogate sequences)

doc/html/changelog.html

@@ -96,7 +96,7 @@
 			<li>
 				plugins:
 				<ul>
-					<li>(none)</li>
+					<li>Fixed UTF-8 decoder to disallow non-shortest-form and surrogate sequences (see <a href="http://www.unicode.org/versions/corrigendum1.html">here</a>).</li>
 				</ul>
 			</li>
 			<li>
@@ -109,6 +109,7 @@
 				libraries:
 				<ul>
 					<li>libFLAC: Fixed a bug in cuesheet parsing where it would return an error if the last line of the cuesheet did not end with a newline.</li>
+					<li>libFLAC: Fixed UTF-8 decoder to disallow non-shortest-form and surrogate sequences (see <a href="http://www.unicode.org/versions/corrigendum1.html">here</a>).</li>
 				</ul>
 			</li>
 			<li>