commit a9ba8ba9a71f3cb8d274c354ff67b6206abeb8ac
author Ethan Furman <ethan@stoneleaf.us> Wed Sep 16 17:37:51 2020 -0700
committer GitHub <noreply@github.com> Wed Sep 16 17:37:51 2020 -0700
tree 75d7cd7a6579d2f0b9ea4d510d142ad21709385d
parent 4465df626684fdc8eeb25ca248218cde2eeeb9ec

[3.9] bpo-39728: Enum: fix duplicate `ValueError` (GH-22277) (GH-22282)

fix default `_missing_` to return `None` instead of raising a `ValueError`
Co-authored-by: Andrey Darascheka <andrei.daraschenka@leverx.com>
(cherry picked from commit c95ad7a91fbd7636f33a098d3b39964ab083bf49)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

Misc/ACKS

diff --git a/Misc/ACKS b/Misc/ACKS
index 2a180eb..5e0953a 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -432,6 +432,7 @@
 Dima Dorfman
 Yves Dorfsman
 Michael Dorman
+Andrey Doroschenko
 Steve Dower
 Allen Downey
 Cesar Douady