6.0.1.0

This release contains two breaking changes.

• From version 5.8.4, the manner in which extra model elements (userdata) are supplied has changed. As of that version, use of the old method generated a warning. As of this version, an error will be generated. To supply additional elements (i.e., beyond parameters, latent-state variables, observations, and covariates) to the basic model components, provide them as a list via the userdata argument.
• In calls to pomp elementary and inference algorithms, it is now necessary to pass all arguments by name. This has always been good practice, but from this release, calls that rely on the position of arguments will typically generate errors.

See the news blog for more detail.