TEST: fixed dtype
TEST: fixed dtype

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