acss                    ACSS complexity
entropy                 Standard measures of complexity for strings
exp1                    Data from Experiment 1 in Gauvrit, Singmann,
                        Soler-Toscano & Zenil
exp2                    Data from Experiment 2 in Gauvrit, Singmann,
                        Soler-Toscano & Zenil
matthews2013            Data from Experiment 1 in Matthews (2013)
normalize_string        Helper functions for calculating cognitive
                        complexity.
