Submission Checklist

• Run unit tests
• Declare copyright holder and agree to license (see below)

Summary

Precursor to #1022 .

To properly handle options when cmdstanr is provided a pre-compiled binary, we need to base arg checking on the cpp args and cmdstan version that the binary was complied with. This version may or may not be the same as the version currently set. This PR does not solve this problem completely. It is a precursor to the solution by at least storing a cmdstan version value in the model object.

Copyright and Licensing

Please list the copyright holder for the work you are submitting
(this will be you or your assignee, such as a university or company):
Max Planck Institute of Animal Behavior

By submitting this pull request, the copyright holder is agreeing to
license the submitted work under the following licenses:

• Code: BSD 3-clause (https://opensource.org/licenses/BSD-3-Clause)
• Documentation: CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)