Add lower level for boot-strapping to RungeKuttaExteriorRV - Add a lower level to RungeKuttaExteriorRV for which bootstrapping starts, e.g start bootstrapping from time level 3 using a 3rd order BDF - Clean up ResidualViscosity

function r = rowVector(v)
    if  size(v,1) == 1
        r = v
    elseif size(v,2) == 1
        r = v';
    else
        error('v is not a matrix');
    end
end