(winner-boring-buffers, winner-set): A window which

(winner-boring-buffers, winner-set): A window which
displays a buffer whose name is in the list `winner-boring-buffers'
will no longer be restored by `winner-undo'.
(winner-sorted-window-list): Used to improve comparison between
window configurations.
(winner-win-data): Simplified and moved.
(winner-conf): Simplified (now uses `winner-win-data').
(winner-change-fun, winner-save-old-configurations)
(winner-save-(un)conditionally, winner-redo): Changes made while in
the minibuffer will be ignored.  (Such changes are undone upon
exit for the minibuffer, anyway.)
(winner-set-conf): Preserve selected window whenever possible.
(winner-make-point-alist): Simplified.
(winner-mode, winner-save-unconditionally): Save current window
configuration on entering minibuffer.
(minor-mode-alist): Don't add winner-mode to `minor-mode-alist',
since it does not change the overall behavior of Emacs.