add entry on None values in field index to CHANGES

zopefoundation · Apr 21, 2017 · 13af105 · 13af105
1 parent 223c61a
commit 13af105
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/CHANGES.rst b/CHANGES.rst
@@ -4,7 +4,7 @@ Changes
 4.2.1 (unreleased)
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-- TBD
+- None are now valid values in a field index. This requires BTrees >= 4.4.1
 
 4.2.0 (2016-06-10)
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