Decreased optimization tolerance and changed the default sigma factor to match that of the scale space generator
Decreased optimization tolerance and changed the default sigma factor to match that of the scale space generator

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