make the convergence criterion for eps > 0 a bit less restrictive.
add a badge for code quality status.
improve code quality metrics.
improve code quality metrics (II).
bug fix on restart of a simulation.
improve code quality metrics (III).
improve code quality metrics (IV).
another bug fix on restart of a simulation.
improve code quality metrics (V).
improve code quality metrics (VI).
improve code quality metrics (VII).
improve code quality metrics (VIII).
improve code quality metrics (IX).
improve code quality metrics (X).
improve code quality metrics (XI).
update README.
fix README.
fix^2 README.
Merge branch 'feature/clext' into dev