add releaste notes

frostming · frostming · commit ac12eb507afd · 2023-06-07T19:35:14.000+08:00
Signed-off-by: Frost Ming &lt;me@frostming.com&gt;
diff --git a/docs/release_notes.rst b/docs/release_notes.rst
@@ -12,6 +12,7 @@ Unreleased
 
 * Support for old serialization formats has been removed.
 * Move the serialization implementation into own method.
+* Drop support for Python older than 3.7.
 
 0.13.0
 ======
