TST: Add python-imaging
TST: Add python-imaging

nilgoyyou/dipy,nilgoyyou/dipy,StongeEtienne/dipy,JohnGriffiths/dipy,matthieudumont/dipy,villalonreina/dipy,JohnGriffiths/dipy,StongeEtienne/dipy,FrancoisRheaultUS/dipy,villalonreina/dipy,FrancoisRheaultUS/dipy,matthieudumont/dipy