.stretch_re             Use time warping to reduce the number of
                        observations in a month
sim_calendar            Simulate calendar effects
sim_daily               Simulate a daily seasonal series
sim_daily_hs            Simulate a daily time series based on the HS
                        model
sim_daily_mstl          Daily time series simulation for the
                        MSTL-algorithm
sim_monthly             Simulate a monthly seasonal series
sim_monthly_hs          Simulate a monthly time series based on the HS
                        model
sim_monthly_mstl        Monthly time series simulation for the
                        MSTL-algorithm
sim_outlier             Simulate an outlier
sim_sfac                Simulate a seasonal factor
