- Loading status belongs to git domain so it makes more sense for it to
be in git package.
- It also makes the `list` file simpler.
- Because status loader is now part of the RepoFinder, the ugly Repo interface is no longer necessary.
- Remove io package and move finder to git package
- Move tempDir and writeFile into test package. They are only used for testing purposes anyway.
- Add a way to specify parent folder for tempDir. Useful for testing nested repos.
- Add new test repos with .git/config files