constructors.  There is no backward compatibility.  Not everything has
  been tested.
* aiff.{py,doc}: deleted in favor of aifc.py (which contains its docs as
  comments)

  variables can still be seen by the debugger
* ftplib.py (retrlines): args should be *args.
* ChangeLog: entries for Sjoerd's addition sunau.py and changes to aiff.py
* test_md5.py: test program for built-in md5 module

  reduce)
* ftplib.py: added default callback for retrlines; added dir() method
* ftplib.py: don't return self in self.connect(); added hack so that if
  'CDUP' is not understood, 'CWD ..' is tried.
* ftplib.py: second method called init() should have been called
  connect(); if __init__ sees more than one argument, it will also try to
  login().

  negative start indices starting from the right.
* ftplib.py: debug() -> set_debuglevel(); change demo to use __init__().
* os.py: added execl, execlp, and execvp.
* lambda.py: removed (now that we have built-in map, reduce, bagof, lambda)
* test_b{1,2}.py, testall.out: added tests for bagof, lambda, map, reduce
* commands.py: use os, not posix
* test_grammar.py: make it easy to disable non-portable int overflow tests
* dis.py: don't abuse range()

* ftplib.py: made cwd() use 'CDUP' when dirname is '..'
* FL.py: added new constant FL_PLACE_FULLSCREEN

* ftplib.py: support __init__ with optional host, port args
* aifc.py: ensure header is written on close even when no data is written

* sndhdr.py: renamed to whatsound.py; use new aifc module for AIFF/AIFC
* ftplib.py: added close() (closes without sending QUIT command)
* aifc.py: documented close()

* Several modules: change "class C(): ..." to "class C: ...".
* flp.py: support for frozen forms.
* Added string.find() which is like index but returns -1 if not found