Added a typedef for RowMajorMatrixXf to make the code more readable
Added a typedef for RowMajorMatrixXf to make the code more readable

tempbottle/superviseddescent,zjchuyp/superviseddescent,patrikhuber/superviseddescent,zjchuyp/superviseddescent,mrgloom/superviseddescent,mrgloom/superviseddescent,patrikhuber/superviseddescent,tempbottle/superviseddescent