v2.27.0 (2 June 2021)

• Refactored indexing functions (renaming, replaces indexing structure in favor of variadic arguments). (#3011)
• Added the serializer and deserializer classes for reading/writing constraints in the generated C++ easier. (#3013, #3018, #3019, #3024, #3036)
• Removed unuse template keyword to fix for clang 12+. (#3026)
• Added more robust detection of improper posteriors by checking that metric does not overflow during adaptation. (#3030)

Documentation

HTML

• Stan User's Guide 2.27
• Stan Language Reference Manual 2.27
• Stan Language Functions Reference 2.27

PDF

• Stan User's Guide 2.27 pdf
• Stan Language Reference Manual 2.27 pdf
• Stan Language Functions Reference 2.27 pdf