tools.gitlibs impl changes

[puredanger]

Just FYI, this project monkeypatches some internals of tools.gitlibs, and those internals have changed in the 2.x releases. Namely, the implementation now shells out to git and does not use jgit/jsch at all. So, just a heads up that if you update to the newer releases you'll need to modify your implementation too.

[manderson202]

Thanks Alex! Appreciate the heads up. And congrats on the release!

[sanel]

Hopefully addressed with #58