bugfix and posterior update in IntervalsModel

IntervalsModel/plots/Distributions.Normal_hh.pdf

IntervalsModel/plots/Distributions.Poisson_hh.pdf

IntervalsModel/plots/Distributions.Weibull_hh.pdf

IntervalsModel/plots/Normal_hh.pdf

IntervalsModel/plots/Poisson_hh.pdf

IntervalsModel/plots/Weibull_hh.pdf

...ibutions.ZWDist{Distributions.Normal, T} where T_rest.pdf

...tributions.ZWDist{Distributions.Normal, T} where T_ws.pdf

...butions.ZWDist{Distributions.Poisson, T} where T_rest.pdf

...ributions.ZWDist{Distributions.Poisson, T} where T_ws.pdf

IntervalsModel/plots/hh.pdf

IntervalsModel/plots/rest.pdf

IntervalsModel/plots/ws.pdf

IntervalsModel/simulation_data/hh.dat

IntervalsModel/simulation_data/rest.dat

IntervalsModel/simulation_data/ws.dat

IntervalsModel/src/IntervalsModel.jl

IntervalsModel/src/hh_durations_model.jl

IntervalsModel/src/interval_overlap_sampling.jl

IntervalsModel/src/plotting_functions.jl