Add release date

oschwald · oschwald · commit fb4a799c7cac · 2019-12-06T14:53:28.000-08:00
diff --git a/releasenotes.md b/releasenotes.md
@@ -1,6 +1,6 @@
 # Release Nodes #
 
-## 2.6.1 ##
+## 2.6.1 (2019-12-06) ##
 
 * `netstandard2.1` was added as a target framework.
 
