Updated NEWS for stable 2.0.8 release

NEWS

@@ -1,3 +1,45 @@
+0MQ version 2.0.8 (Stable), released on 2010/08/25
+==================================================
+
+New functionality
+-----------------
+
+* The ZMQ_SWAP functionality has now been implemented for all socket types.
+
+Bug fixes
+---------
+
+* Many bug fixes (about 30), see the ChangeLog for details.
+
+
+Documentation
+-------------
+
+* zmq_device(3) is now documented and describes the built-in devices.
+
+* The ZMQ_XREQ and ZMQ_XREP socket types are now documented in zmq_socket(3).
+
+Interface
+---------
+
+* By popular demand, the zmq_stopwatch_start, zmq_stopwatch_stop and zmq_sleep
+  functions have been added back into distribution.  This API is now in a
+  separate include file, zmq_utils.h.
+
+* The ZMQ_UPSTREAM and ZMQ_DOWNSTREAM socket types have been renamed to
+  ZMQ_PULL and ZMQ_PUSH for clarity.  The old names are still defined for
+  compatibility reasons and will be removed in a future version.
+
+* API calls that expect non-null parameters now return -1 and set errno to
+  EFAULT if null parameters are passed.
+
+
+Thanks to
+---------
+
+Everyone.
+
+
 0MQ version 2.0.7 (Beta), released on 2010/06/04
 ================================================