Adding swap_divergence flag

[hqkhan]

Purpose

Adding swap_divergence option to allow users to customize whether "upstream behind count" should be displayed first or "upstream ahead count".

Main motivation behind this was that I use gitmux in conjunction with lazygit. Lazygit's branch menu always shows ahead count first followed by behind count. I thought it'd be nice to be able to sync them up.

swap_divergence: false:

swap_divergence: true:

Approach

Added swap_divergence boolean flag for yaml file. Instead of appending to the returned string s right away, saving ahead and behind strings in separate vars then appending to original string s based on swap_divergence flag.

Thank you!

[arl]

Hi @hqkhan
That looks good.
I've let 2 style comments, and do you think you can add you a test case in formatter_test.go in which divergences strings are swapped, please?

Thank you

[hqkhan]

@arl

I've let 2 style comments, and do you think you can add you a test case in formatter_test.go in which divergences strings are swapped, please?

Thanks for the review! Yes, I will add a test and also update README to make the option more visible.

[arl]

@arl

I've let 2 style comments, and do you think you can add you a test case in formatter_test.go in which divergences strings are swapped, please?

Thanks for the review! Yes, I will add a test and also update README to make the option more visible.

Of course! Yes good catch about the readme, that'd be nice.

[arl]

LGTM thanks for the extensive testing 👍
But i forgot to ask you, sorry my bad, can you add swap_divergence: false with a doc string to the default config in gitmux.yml (at project root).

[hqkhan]

LGTM thanks for the extensive testing 👍 But i forgot to ask you, sorry my bad, can you add swap_divergence: false with a doc string to the default config in gitmux.yml (at project root).

Absolutely, will do

[arl]

LGTM
Thank you

[arl]

@hqkhan
I'll cut a release with this and #97 resolution (when I'll have done it).