calc_network_R          Calculate the reproduction number (R) for a
                        (heterogeneous) network
constants               Constants used in 'superspreading'
dpoislnorm              Density of the Poisson-lognormal compound
                        distribution
dpoisweibull            Density of the Poisson-Weibull compound
                        distribution
ic_tbl                  Helper function to create a model comparison
                        table
ppoislnorm              Cumulative distribution function of the
                        Poisson-lognormal compound distribution
ppoisweibull            Cumulative distribution function of the
                        Poisson-Weibull compound distribution
probability_contain     Probability that an outbreak will be contained
probability_emergence   Calculate the probability a disease will emerge
                        and cause a sustained outbreak (R > 1) based on
                        R and initial cases
probability_epidemic    Calculate the probability a disease will cause
                        an outbreak based on R, k and initial cases
probability_extinct     Calculate the probability a branching process
                        will go extinct based on R, k and initial cases
proportion_cluster_size
                        Estimate what proportion of new cases
                        originated within a transmission event of a
                        given size
proportion_transmission
                        Estimate what proportion of cases cause a
                        certain proportion of transmission
