Tracking complexity over git mv

[KennethNielsen]

Hi and thanks for the tool.

I recently read the "put your code in a src folder" article by Hynek and found that I agreed with basically everything. So I moved the code. The problem then is, that when I run wily on the archive, it only shows me stats on the part the history that is after the move. It would be cool if Wily could follow the git renaming heuristic and track the files across a move.

If this supposed to work already and isn't a feature request, I'm happy to provide more debugging information.