My version with timeout, ahead/behind/staged/untracked markers and counts, and zsh support

[joeytwiddle]

I have heavily hacked around with your awesome prompt.

I'm not really expecting you to merge this, as it probably looks quite monstrous to you.

But it seemed rude of me not to at least offer. :blush:

You are all welcome to pick any bits you fancy out of here.

[jimeh]

@joeytwiddle @mikeweilgart You've both done some very impressive work :)

I really like some of the features you two have added to your forks, and would love to incorporate at least some of them. However I'm not planning on merging this in as is.

I've decided instead that a "rewrite" / v1.0 is probably in order to get away from the current very "quick hack script" quality of my repo. I've added #33 as a initial starting point for this. I'd love to hear your guys feedback, and if you think the goals need to be changed, extended, shot-in-the-face, or whatnot :)