deprecated zclasses

doc/CHANGES.txt

@@ -26,6 +26,8 @@ Zope Changes
 
     Features added
 
+      - ZClasses are deprecated and should no longer be used.
+
       - Added a "clock server" servertype which allows users to
         configure methods that should be called periodically as if
         they were being called by a remote user agent on one of Zope's

lib/python/ZClasses/__init__.py

@@ -17,6 +17,12 @@ This sample product publishes a folder-ish and a simple object.
 $Id$'''
 __version__='$Revision: 1.7 $'[11:-2]
 
+
+import warnings
+warnings.warn('ZClasses are deprecated, unmaintained and should no longer be used',
+              DeprecationWarning,
+              stacklevel=2) 
+
 import ZClass
 import ZClassOwner