Added yale_nd_row, yale_nd_row_as_hash, yale_nd_row_as_array, yale_nd_row_as_set, yale_nd_row_as_sorted_set, yale_row, yale_row_as_hash, yale_row_as_array, yale_row_as_set, yale_row_as_sorted_set to NMatrix::YaleFunctions in order to speed up getting multiple items from some row of a Yale matrix