[QUESTION] how to find options set by scalar?

Hi,

I'm wondering about making the config options set by `scalar register` a bit more discoverable.

Background: I was recently working in a large repo that recommended I run
`scalar register` to help make git run a bit more smoothly, and I did (and
didn't think much of it and forgot about it). It was a couple of weeks later I
was again working in this repo and wanted to update my config, but was a bit
confused when I saw a bunch of things set that I didn't remember setting, e.g.
'status.aheadBehind false'. It took me remembering that I had run `scalar
register` and some poking around the code to discover where these options had
come from.

I'm not sure if this is something best addressed by documentation, or maybe by `scalar register` adding comments to the config lines it changes?

Thanks, Matt