parsePriorParameters is an internal function for parsing prior parameters from viable sources
parsePriorParameters(
config_theta,
simulation_constants,
prior_density_override,
prior_par_override
)parsePriorParameters returns a named list containing:
prior_distthe type of distribution. One of NORMAL, UNIFORM, RAW.
prior_paran examinee-wise list containing prior parameters.
a list containing theta estimation configurations.
a named list containing simulation constants.
(optional) if supplied, treated as RAW distribution densities and overrides config values.
(optional) if supplied, treated as NORMAL distribution parameters and overrides config values.