Change diffing, adds Path printing

[tyler-boyd]

Fixes https://github.com/sahilm/yamldiff/issues/7 by pulling out kylelemons/godebug/pretty and using r3labs/diff to generate the diff instead.

This enables printing a path before the diff.

Example output:

I hope this is valuable to others, but at the very least I will be using this so it won't go to waste regardless 🙂

Also: I use a much newer version of Go than you, I think. The Gopkg.lock diff is pretty big because of that.

Perhaps it would make more sense to add this behind a flag (eg. --show-paths) to maintain backwards-compatibility; I can implement that if you'd like.

[tyler-boyd]

cc/ @sahilm , not sure if you would get a notification from me opening this PR.

[per-bohlin]

@sahilm , please consider this pull pull-request from @tyler-boyd . I love yamldiff, it has such great potential, but without having the context of the change, it is not very useful.

[scarby]

@sahilm this would be a very useful thing. Are you still actively maintaining this tool?

[sahilm]

I know this is super late but I just incorporated this change in https://github.com/sahilm/yamldiff/pull/19. Sorry 😐.

cc: @tyler-boyd @per-bohlin @scarby @hermanbanken

[tyler-boyd]

No worries, thank you!