Create residual viscosity package +rv and generalize the ResidualViscosity class - Generalize residual viscosity, by passing user-defined flux and calculating the time derivative outside of the update. - Create separate RungekuttaRV specifically using interior RV updates - Separate the artifical dissipation operator from the scheme AdvectionRV1D so that the same scheme can be reused for creating the diff op used by the ResidualViscosity class

% Prints the version and location of the sbplib currently in use.
function sbplibVersion()
    location = sbplibLocation();

    name = 'sbplib (feature/grids)';
    ver = '0.0.x';

    fprintf('%s %s\n', name, ver);
    fprintf('Running in:\n%s\n', location);
end