Set release date

oschwald · oschwald · commit bbec16c24aa2 · 2021-09-18T09:55:54.000-07:00
diff --git a/HISTORY.rst b/HISTORY.rst
@@ -3,7 +3,7 @@
 History
 -------
 
-2.1.0
+2.1.0 (2021-09-18)
 ++++++++++++++++++
 
 * The C extension now correctly supports objects that implement the
