Let pprint() support sets and frozensets (suggested by David Mertz).
diff --git a/Misc/NEWS b/Misc/NEWS
index 3b55d74..103a353 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -378,6 +378,8 @@
 Library
 -------
 
+- The pprint module now supports sets and frozensets.
+
 - #1221598: add optional callbacks to ftplib.FTP's storbinary() and
   storlines() methods.  (Contributed by Phil Schwartz)