#665194: Update email.utils.localtime to use astimezone, and fix bug.

The new code correctly handles historic changes in UTC offsets.
A test for this should follow.

Original patch by Alexander Belopolsky.
diff --git a/Misc/NEWS b/Misc/NEWS
index ceab279..16442cc 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,9 @@
 Library
 -------
 
+- Issue ##665194: Update email.utils.localtime to use datetime.astimezone and
+  correctly handle historic changes in UTC offsets.
+
 - Issue #15199: Fix JavaScript's default MIME type to application/javascript.
   Patch by Bohuslav Kabrda.