Improve running command from subfolder

[rockisch]

Related Issue: #129

So, while doing some investigation, I discovered that whenever the git cmd is executed in a subfolder, it does a recursive search for the git repo on the current path.

Although the impact on this program is very low, since we only do ~10 git calls per run, I was already going to extract the working dir to fix the LICENSE issue, so why not improve the other calls?

Also, we can't call workdir() on bare git folders, but the program was already not working on them, since they don't have any content.

I can also reorder the functions that receive the Repository to keep the code more uniform, but some people don't like big git changes since it messes their git blame ¯\(ツ)/¯

[spenserblack]

I can also reorder the functions that receive the Repository to keep the code more uniform, but some people don't like big git changes since it messes their git blame ¯(ツ)/¯

We've already had some big changes recently (#98), so I don't think it's an issue.

[rockisch]

I reordered the functions to keep the code more consistent, besides updating the branch to match master.