added tests and stuff
added tests and stuff

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