Subsumed the times() function into repeat().
Added chain() and cycle().
+- The rotor module is now deprecated; the encryption algorithm it uses
+ is not believed to be secure, and including crypto code with Python
+ has implications for exporting and importing it in various countries.
+
- The socket module now always uses the _socketobject wrapper class, even on
platforms which have dup(2). The makefile() method is built directly
on top of the socket without duplicating the file descriptor, allowing