Remove no so necessary usage of `destructuring-bind' in `comint-complete-from-history'.
Also split history entries on parens and quotes.
More sanitising of the syntax table in `shell-mode'.
Set `kill-do-not-save-duplicates' instead of using an advice on `kill-new'.
Added command `yank-pop-forward'.
Added `vllt' as an abbrev for `vielleicht'.