FayyazulHassan

Issues with providing relative paths with backslashes on windows

1

I can see that on lines [1640-1643](https://github.com/newren/git-filter-repo/blob/fff5f43a155ffa16b054d582ba049006469d8b19/git-filter-repo#L1640) there's a check to prevent relative paths. Unfortunately in the preceding lines the path string is split only by forward slashes thus resulting...