added nrep and nvalue accessor functions for jags_simulation
jags_simulation simulated replaced by data
nvalues and nrep accessor functions and option to delist
uses is_named instead of is.data.frame and all jags_ classes
simulated now called data and dropped nvalues and nrep elements
no longer export calc_estimates_jags_samples
dropped checking subset_jags.jags_simulation as in data_jags
now nrep and nvalue accessor functions
auto update