Milestone sage-combinat

This milestone has tickets that are being worked on by the upstream Sage-combinat community. The tickets here are usually not ready to be merged yet but once they are ready ought to be reassigned to the current merge milestone.

For more details on Sage-combinat check out the  Sage-combinat Google group and also the Sage wiki info about  Sage-combinat

closed due to request of sage-combinat group?