Prepare 12.3.1 release.

HexDecimal · HexDecimal · commit c99fb9ce3b47 · 2021-05-13T16:49:28.000-07:00
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
@@ -8,6 +8,9 @@ v2.0.0
 
 Unreleased
 ------------------
+
+12.3.1 - 2021-05-13
+-------------------
 Fixed
  - Fix Windows deployment.
 
