Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal sequences.
Patch by Nick Barnes and Victor Stinner.
diff --git a/Misc/NEWS b/Misc/NEWS
index 6b7a94d..587106c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 Core and Builtins
 -----------------
 
+- Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
+  sequences. Patch by Nick Barnes and Victor Stinner.
+
 - Issue #1588: Add complex.__format__. For example, 
   format(complex(1, 2./3), '.5') now produces a sensible result.