exporting the prompt seems to be too harsh and breaks the shell in Emacs as the PROMPT_COMMAND for xterm (say) overwrites the 'dumb' PROMPT_COMMAND, which now is 'contaminated' with ASCII escape strings.
Even though the previous version works fine on OS X 10.6.8, it seems to be
causing problems for other Mac users on 10.8.x. Unfortunately I do not have
access to a newer Mac to test on.
--stat added, jumpstat alias removed.
Options passed to the `j` function will now be passed on autojump. As a result,
directories beginning with `-` are no longer supported.
A -s short alias for --stat is added. Instead of using jumpstat, use `j --stat`
or `j -s` instead.
