Add support for artificial viscosity to the 1d burgers scheme. - Add support for artificial viscosity by parametrizing the discretization operator and boundary closure on the viscosity. - Add a time stepper which evaluates and updates the residual viscosity of the solution.

function names = getVarname(varargin)
    names = cell(size(varargin));

    for i = 1:numel(varargin)
        names{i} = inputname(i);
    end
end