Update changelog

CHANGELOG.mdown

@@ -1,3 +1,18 @@
+* 1.2.0 (2012-08-18)
+
+  Changes:
+
+    * Added AmqpHandler (for use with AMQP servers)
+    * Added CubeHandler
+    * Added NativeMailerHandler::addHeader() to send custom headers in mails
+    * Added the possibility to specify more than one recipient in NativeMailerHandler
+    * Added the possibility to specify float timeouts in SocketHandler
+    * Added NOTICE and EMERGENCY levels to conform with RFC 5424
+    * Fixed the log records to use the php default timezone instead of UTC
+    * Fixed BufferHandler not being flushed properly on PHP fatal errors
+    * Fixed normalization of exotic resource types
+    * Fixed the default format of the SyslogHandler to avoid duplicating datetimes in syslog
+
 * 1.1.0 (2012-04-23)
 
   Changes: