v4.8.0 (16 January 2024)

• Updated Boost headers to v1.81 (#2955)
• Added the Dirichlet-Multinomial distribution to the Stan Math library (dirichlet_multinomial_lpmf, dirichlet_multinomial_log, and dirichlet_multinomial_rng). (#2979)
• binomial_logit_glm_lpmf distribution added (#2946)
• Improved numerical stability of Bernoulli CDF functions (#2784)
• Replaced the std::vectors for read/write events in matrix_cl with tbb::concurrent_vectors (#2905)
• Added framework for generic higher-order autodiff support through finite-differences. (#2929)
• Minor cleanup of numerical stability, constants, compound functions in OpenCL kernels (#2934)
• Fixes aliasing issue in adjoint acccumulation for OpenCL (#2943)
• Improve numerical stability of binomial_logit distribution (#2945)
• Automatically detect UCRT toolchain use on Windows (#2948)
• Update multiple functions to delegate to the compound functions (log1p_exp, etc.) where possible (#2950)
• Fixed the RPATH to the TBB library being passed twice on the command line (#2952)
• Split eigendecompose mix tests to fix CI memory issues (#2953)
• Fix distribution test failures with row-vector integer inputs to bernoulli CDF functions (#2954)
• Simplified usage of ref-type deduction (#2958)
• Added OpenCL support for the binomial_logit_glm distribution (#2960)
• Fixed a build configuration issue where the optional tbbmalloc and tbbmalloc_proxy libraries were built unconditionally. (#2969)
• Remove unused meta requires (#2976)
• Bugfix for uninitialized var_value<Matrix> types and assignment when the rhs of the assignment is an expression (#2978)
• Invert the input matrix in-place which reduces the memory requirement for this function. (#2981)
• Fixes the rng function for the Inverse Wishart Cholesky distribution. (#2984)
• Fixed a compilation issue with the check_symmetric function on complex-valued inputs under LLVM 17 (#2991)
• Fixed missing include guard for OpenCL rev headers (#2996)
• Add helpful context to the failure message for the ad testing framework (#2997)