person("Gabor", "Csardi", , "csardi.gabor@gmail.com", role = c("aut", "cre"))
Cyclomatic complexity is a software metric (measurement),
    used to indicate the complexity of a program. It is a quantitative
    measure of the number of linearly independent paths through a
    program's source code. It was developed by Thomas J. McCabe, Sr. in
    1976.