Prepare 13.0.0 release.

HexDecimal · HexDecimal · commit adb3999595c0 · 2021-09-20T15:03:23.000-07:00
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
@@ -8,6 +8,9 @@ v2.0.0
 
 Unreleased
 ------------------
+
+13.0.0 - 2021-09-20
+-------------------
 Changed
  - Console print and drawing functions now always use absolute coordinates for negative numbers.
 
