filter commits in git.Commits based on sub-repo permissions
Created by: mollylogue
This PR adds sub-repo permissions filtering on the git.Commit function by passing the --name-only flag when running git log to get the list of files modified in each commit along with the rest of the commit information. I decided to put this part up for review before implementing/testing the filtering for the other functions in this package so that I could get a signoff on this approach (or feedback on how to do it better) before moving forward.