Update changelog

CHANGES.txt

@@ -3,13 +3,12 @@ CHANGES
 =======
 
 ---
-4.0
+3.4
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-* Issue #97: ``find_packages()`` now supports PEP 420 namespace packages. It
-  does so by considering all subdirectories of the start directory that
-  aren't regular packages to be PEP 420 namespace packages (on Python 3.3+
-  only).
+* Issue #97: Added experimental support for PEP 420 namespace package
+  discovery via the ``PEP420PackageFinder.find`` method. This new method will
+  discover packages for directories lacking an __init__.py module.
 
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 3.3