Update changelog

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

ChangeLog

@@ -1,3 +1,8 @@
+1.3.6 - 2013.10.01
+	* Merge slimlock.
+	* Add support ^H (like backspace).
+	* And fix some bugs.
+
 1.3.5 - 2012.12.31
 	* Support UTF8 string.
 	* Add systemd service.