ssm_summary: Quickly summarize the state-space model posteriors
In bstaton1/FitSR: Functions to Fit and Summarize SRA Models

Quickly summarize the state-space model posteriors

1 2	ssm_summary(post, params, model, diag_plots = F, file = NULL, seed = NA, plot_dir = NULL, return_post = F)

`post`	an object of class `mcmc.list`
`params`	a list object created by `SimFit::init_sim()` or `kusko_data_prep()$params`. Contains the driving parameters and dimensional variables.
`model`	the model identifier: e.g., a number or letter
`diag_plots`	logical. Do you wish to save traceplots and density plots for convergence diagnostics? Defaults to `FALSE`.
`file`	character vector of length 1: optional file name of the saved diagnostic plots.
`seed`	a numeric vector of length 1: represents a secondary identifier. Typically would be used to identify the seed. To exclude, set to the default: `NA`.
`plot_dir`	character vector representing the directory or full path to the location where you wish to save the plot files, if `diag_plots = TRUE`. Defaults to `NULL`, which will place the files in the working directory.
`return_post`	logical. Do you wish to return a list with elements equal to `$ests` (the standard estimate summary) and `$post` (the updated mcmc.list object)? Defaults to `FALSE`.