This function forcasts conditional mean,variance,skewness and kurtosis with given GARCHSK model.
garchsk_fcst(params, data, max_forecast = 20)vector of GARCHSK model parameters(p1,const2,p2,q2,const3,p3,q3,const4,p4,q4)
vector time series data
how long does this function forecast(Default value is 20)
list of predicted conditional mean,variance,skewness and kurtosis