Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and linebreak detection. The speedup is about 25% for split() (571 / 457 usec) and 35% (175 / 127 usec )for splitlines()
diff --git a/Misc/NEWS b/Misc/NEWS
index 136494c..ce4a312 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
Core and builtins
-----------------
+- Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and linebreak
+ detection
+
- Added ``PyType_ClearCache()`` and ``sys._cleartypecache`` to clear the
internal lookup cache for ref leak tests.