add ace-jump-cycle

[hchbaw]

Hi!

I'm curious if this is useful, I've added the functionality to go through the next/previous jumps. Because I hit C-n, C-p and TAB sometimes in the ace-jump-mode.

Please take a look sometime.

[hchbaw]

Oh, I'm sorry.

I've found a bug in this code when wrapping around the jumps :sweat:

[hchbaw]

I believe that I've fixed the bug on wrapping around.

Please take a look for sometime.

[joca-bt]

That would actually be cool!