Possible compatibility problems with earlier versions marked with '*'.
+* Old Z39.50 codecs no longer supported.
+
+Added ZOOM C binding. See http://zoom.z3950.org/
+
+Renamed states for COMSTACKs to avoid confusion with events.
+
+Implemented cs_look and proper cs_rcvconnect.
+
+Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
+
+Configure detects POSIX threads on OpenBSD.
+
+When sort flag 'i' was specified in yaz-client the caseSensitivy flag
+was set to a wrong value. Thanks to Robert Sanderson for reporting this.
+
When error is returned from present handler, non-surrogate diagnostic
is returned in present response (and fetch handler is no longer called).