setup.py: Use keyword for `sources`.
setup.py: Use keyword for `sources`.

DudLab/rank_filter,nanshe-org/rank_filter,jakirkham/rank_filter,DudLab/rank_filter,nanshe-org/rank_filter,DudLab/rank_filter,nanshe-org/rank_filter,jakirkham/rank_filter,jakirkham/rank_filter