Created new nonick option for sg.info() and sg.project(): when set to True, no projname file needs to be saved to mark project directories. Fixed a newly arisen bug to do with same method: comments on line 70 of fieldcls.py point out this is weird: needs to be looked at further. All coord and ax objects created from param2gr are now the same object whenever they need to be: namely, when all their attributes are the same.