RF: wrap use of range in list() for Python 3
RF: wrap use of range in list() for Python 3

range returns an iterator for Python 3 so we need an explicit call to
list to make a list that we can add to.

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