Add the following methods in LaplaceCurvilinear: getBoundaryOperator, getBoundaryQuadrature, getBoundaryBorrowing. Remove get_boundary_ops. Make interface and boundary_condition methods use the new methods.

function done = timeTask(fmt, varargin)
    fprintf(fmt, varargin{:});
    tStart = tic;

    function done_fun()
        fprintf(' - done %fs\n', toc(tStart));
    end
    done = @done_fun;
end