stubs that exist only in 2 or 3 stdlib

Only in stdlib/3/: cgi.pyi  # done
Only in stdlib/2/: commands.pyi  # removed in py3
Only in stdlib/2/: compileall.pyi  # done
Only in stdlib/3/: concurrent  # new in 3
Only in stdlib/2/: cookielib.pyi  # moved
Only in stdlib/3/: curses
Only in stdlib/3/: dis.pyi  # done
Only in stdlib/2/: distutils
Only in stdlib/2/: exceptions.pyi  # removed in py3
Only in stdlib/2/: future_builtins.pyi  # removed in py3
Only in stdlib/2/: genericpath.pyi
Only in stdlib/3/: importlib  # changed to package in py3
Only in stdlib/2/: importlib.pyi  # same
Only in stdlib/2/: markupbase.pyi  # moved to _markupbase in py3, says it should not be used directly
Only in stdlib/2/: md5.pyi  # merged into hashlib
Only in stdlib/2/: mimetools.pyi  # removed in py3
Only in stdlib/3/: msvcrt.pyi
Only in stdlib/3/multiprocessing: managers.pyi
Only in stdlib/3/multiprocessing: pool.pyi
Only in stdlib/2/multiprocessing: util.pyi
Only in stdlib/2/: optparse.pyi  # PR from ethan
Only in stdlib/3/: pyclbr.pyi  # done
Only in stdlib/2/: quopri.pyi  # done
Only in stdlib/2/: repr.pyi  # renamed in py3
Only in stdlib/2/: rfc822.pyi  # removed
Only in stdlib/2/: robotparser.pyi  # renamed in py3
Only in stdlib/2/: sha.pyi  # merged into hashlib
Only in stdlib/2/: spwd.pyi  # done
Only in stdlib/2/: strop.pyi  # dropped in 3 (and undocumented in 2)
Only in stdlib/3/: sysconfig.pyi  # done
Only in stdlib/2/: thread.pyi  # moved to _thread in py3
Only in stdlib/3/: tkinter
Only in stdlib/2/: xxsubtype.pyi  # done


=== private stuff
Only in stdlib/2/: _collections.pyi
Only in stdlib/3/: _compression.pyi
Only in stdlib/3/: _curses.pyi
Only in stdlib/3/: _dummy_thread.pyi
Only in stdlib/2/: _functools.pyi
Only in stdlib/2/: _hotshot.pyi
Only in stdlib/3/: _importlib_modulespec.pyi
Only in stdlib/2/: _io.pyi
Only in stdlib/3/: _markupbase.pyi
Only in stdlib/2/: _md5.pyi
Only in stdlib/3/: _operator.pyi
Only in stdlib/3/: _posixsubprocess.pyi
Only in stdlib/2/: _sha.pyi
Only in stdlib/2/: _sha256.pyi
Only in stdlib/2/: _sha512.pyi
Only in stdlib/2/: _socket.pyi
Only in stdlib/2/: _sre.pyi
Only in stdlib/2/: _struct.pyi
Only in stdlib/3/: _subprocess.pyi
Only in stdlib/2/: _symtable.pyi
Only in stdlib/3/: _thread.pyi
Only in stdlib/2/: _weakref.pyi
Only in stdlib/2/: _weakrefset.pyi

=== renamed 2/3 or removed in 2:
Only in stdlib/3/: unittest
Only in stdlib/2/: unittest.pyi
Only in stdlib/3/: urllib
Only in stdlib/2/: urllib.pyi
Only in stdlib/2/: urllib2.pyi
Only in stdlib/2/: urlparse.pyi
Only in stdlib/2/email: MIMEText.pyi
Only in stdlib/2/email: _parseaddr.pyi
Only in stdlib/3/email: charset.pyi
Only in stdlib/3/email: contentmanager.pyi
Only in stdlib/3/email: encoders.pyi
Only in stdlib/3/email: errors.pyi
Only in stdlib/3/email: feedparser.pyi
Only in stdlib/3/email: generator.pyi
Only in stdlib/3/email: header.pyi
Only in stdlib/3/email: headerregistry.pyi
Only in stdlib/3/email: iterators.pyi
Only in stdlib/3/email: message.pyi
Only in stdlib/3/email/mime: __init__.py
Only in stdlib/2/email/mime: __init__.pyi
Only in stdlib/3/email/mime: application.pyi
Only in stdlib/3/email/mime: audio.pyi
Only in stdlib/3/email/mime: image.pyi
Only in stdlib/3/email/mime: message.pyi
Only in stdlib/3/email: parser.pyi
Only in stdlib/3/email: policy.pyi
Only in stdlib/2/: BaseHTTPServer.pyi
Only in stdlib/2/: ConfigParser.pyi
Only in stdlib/2/: Cookie.pyi
Only in stdlib/2/: HTMLParser.pyi
Only in stdlib/2/: Queue.pyi
Only in stdlib/2/: SocketServer.pyi
Only in stdlib/2/: StringIO.pyi
Only in stdlib/2/: UserDict.pyi
Only in stdlib/2/: UserList.pyi
Only in stdlib/2/: UserString.pyi
Only in stdlib/2/: __builtin__.pyi
Only in stdlib/3/: html
Only in stdlib/2/: htmlentitydefs.pyi
Only in stdlib/3/: http
Only in stdlib/2/: httplib.pyi
Only in stdlib/3/: queue.pyi
Only in stdlib/2/: cPickle.pyi
Only in stdlib/2/: cStringIO.pyi
Only in stdlib/3/: collections
Only in stdlib/2/: collections.pyi
Only in stdlib/3/: socketserver.pyi
Only in stdlib/3/: configparser.pyi