Remove optional arguments in iteration schemes
Remove optional arguments in iteration schemes

anhiga/poliastro,anhiga/poliastro,Juanlu001/poliastro,newlawrence/poliastro,Juanlu001/poliastro,Juanlu001/poliastro,newlawrence/poliastro,newlawrence/poliastro,anhiga/poliastro,poliastro/poliastro