Issue #15103: remove the NUL character (serving as a Mercurial binary marker) from Python/importlib.h.
Instead the email notification hook uses a configuration option to omit importlib.h diffs.
diff --git a/Python/importlib.h b/Python/importlib.h
index c9431e4..0b633ab 100644
--- a/Python/importlib.h
+++ b/Python/importlib.h
Binary files differ