Add entry to changelog for the orquesta execution graph fix
@@ -26,6 +26,10 @@ Changed
Fixed
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+* Refactored orquesta execution graph to fix performance issue for workflows with many
+ references to non-join tasks. st2workflowengine and DB models are refactored accordingly.
+ (improvement) StackStorm/orquesta#122.
+
2.10.2 - February 21, 2019
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