sim_nFam: Simulate a nuclear family from a single founder
In simrvprojects/SimRVPedigree: Simulate Pedigrees Ascertained for a Rare Disease

Simulate all life events for an individual and create a nuclear family, when appropriate.

1 2	sim_nFam(found_info, stop_year, last_id, hazard_rates, NB_params, GRR, carrier_prob, RVfounder, fert)

`found_info`	Data.frame with 1 row. All pedigree information for the founder, must contain all fields generated by `create_pedFile`.
`stop_year`	Numeric. The last year of study. If not supplied, defaults to the current year.
`last_id`	Numeric. The last id used in the pedigree.
`hazard_rates`	An object of class `hazard`, created by `hazard`.
`NB_params`	Numeric vector of length 2. The size and probability parameters of the negative binomial distribution used to model the number of children per household. By default, `NB_params` `= c(2, 4/7)`, due to the investigation of Kojima and Kelleher (1962).
`GRR`	Numeric. The genetic relative-risk of disease, i.e. the relative-risk of disease for individuals who carry at least one copy of the causal variant. Note: When simulating diseases with multiple subtypes `GRR` must contain one entry for each simulated subtype. See details.
`carrier_prob`	Numeric. The carrier probability for all causal variants with relative-risk of disease `GRR`. By default, `carrier_prob` `= 0.002`
`RVfounder`	Logical. Indicates if all pedigrees segregate the rare, causal variant. By default, `RVfounder = FALSE` See details.
`fert`	Numeric. A constant used to rescale the fertility rate after disease-onset. By default, `fert = 1`.