feature: refactor land into a seperate modules

[refack]

nodegit is a dependency monster (barly buildable on windows), and provides a very specific function, that's not nececerily a main use-case.

[alangpierce]

Yeah, I've seen various problems with nodegit, e.g. #67. :-/

nodegit is used in convert as well, so it's not trivial to just isolate it. But it may be best to rewrite both convert and land to just shell out to git (which is the approach I originally took for a while).

[refack]

There are thin-wrappers, such as git-js

[alangpierce]

Ooh, cool, thanks, I hadn't seen that.

[refack]

Would you mind if I give it a try (i.e. assign to me)?

[alangpierce]

@refack sure, done. The previous code in 8c78da9 has the original code from before I switched convert to nodegit. Also may be good to do things incrementally, like switch convert (or part of convert) to use git-js first. convert also has plenty of tests, and unfortunately land doesn't have tests at the moment because they were hard to write.

Thanks!

[alangpierce]

@refack FYI I just moved this project to the decaffeinate org, so the URL is different. I think everything should redirect just fine, but you may need/want to update your git remote.

[refack]

👍

[refack]

@alangpierce can you review my current work. I got the convert test suite to go green (on my machine). So it's at a good stage.

[alangpierce]

@refack sorry for the delay! nodegit is still causing various issues, so I'm planning to move from it to simple-git based off of your branch. Your branch had a lot of changes, so I'm going to try to break it up into smaller pieces, first focusing on moving off of nodegit and then general Windows support should be a bit more manageable after that.