RF: up numpy and scipy dependencies as discussed
RF: up numpy and scipy dependencies as discussed

beni55/dipy,jyeatman/dipy,samuelstjean/dipy,JohnGriffiths/dipy,FrancoisRheaultUS/dipy,samuelstjean/dipy,nilgoyyou/dipy,oesteban/dipy,JohnGriffiths/dipy,rfdougherty/dipy,jyeatman/dipy,villalonreina/dipy,nilgoyyou/dipy,matthieudumont/dipy,sinkpoint/dipy,FrancoisRheaultUS/dipy,sinkpoint/dipy,demianw/dipy,rfdougherty/dipy,StongeEtienne/dipy,samuelstjean/dipy,matthieudumont/dipy,Messaoud-Boudjada/dipy,demianw/dipy,Messaoud-Boudjada/dipy,mdesco/dipy,villalonreina/dipy,oesteban/dipy,StongeEtienne/dipy,mdesco/dipy,beni55/dipy