New Features
- validate_dims in stan::io::var_context vas made a virtual function which allows its implementation for JSON data which is needed to accepts arrays where any dimension is size 0
- replaced Eigen vectors of strings with std::vectorstd::string
- replaced stan::math::domain_error with throw_domain_error
- added const noexcept accessors to the stepsize adaptation class which allows developers to query the adaptation parameters in contexts where it's natural to have a const sampler (logging, serialization, ...)
Documentation
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