BF - changed _compact_tensor to lower_triangular in shm_tests
BF - changed _compact_tensor to lower_triangular in shm_tests

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