Implement multiple tolerances in NewtonSolver.
Replace NewtonSolver:iteration() and iteration_with_recalculated_jacobian() with a vector iterations_with_recalculated_jacobian().
Fixes #102.
Rename correctly: damping "coefficient" to damping "factor".
Add default tolerance to Newton.
Change default value of handleMultipleTolerancesAnd to false in Newton.
Change output in Newton.