Update deprecated syntax for future rstan compatibility

[andrjohns]

Now that rstan 2.26 is available on CRAN we need to update the deprecated syntax in your package's Stan models, otherwise it will fail to install with an upcoming version of RStan.

The following updates have been made:

• New array syntax

Your package was also missing the configure scripts needed for rstantools to maintain your package's compatibility with the new versions of rstan & StanHeaders, so I've added those as well

More information about the deprecated and removed syntax in Stan can be found here:

• https://mc-stan.org/docs/functions-reference/deprecated-functions.html
• https://mc-stan.org/docs/functions-reference/removed-functions.html

If you could merge and submit to CRAN soon, it would be greatly appreciated.

Let me know if you have any questions about these changes.

Thanks!

[andrjohns]

@dmenne would it be possible to push these changes to CRAN soon? Otherwise your package will break with the next rstan version

[dmenne]

Sorry, I forgot, thanks for the reminder. Uploaded and waiting for confirmation

[andrjohns]

No worries, much appreciated!