Bug Fixes

• Fixed a bug that lead to stack overflow for deeply nested JSON values (objects, array) by changing the implementation of the destructor from a recursive to an iterative approach. #832, #1419, #1835

Further Changes

• Added WhiteStone Bolt. #1830

Bug Fixes

• Fixed a segmentation fault when serializing std::int64_t minimum value. #1708 #1722
• Fixed the contains() function for JSON Pointers. #1727 #1741
• Fixed too lax SFINAE guard for conversion from std::pair and std::tuple to json. #1805 #1806 #1825 #1826
• Fixed some regressions detected by UBSAN. Updated CI to use Clang-Tidy 7.1.0. #1716 #1728
• Fixed integer truncation in iteration_proxy. #1797
• Updated Hedley to v11 to fix a E2512 error in MSVC. #1799
• Fixed a compile error in enum deserialization of non non-default-constructible types. #1647 #1821
• Fixed the conversion from json to std::valarray.

Improvements

• The items() function can now be used with a custom string type. #1765
• Added const version for json_pointer::back. #1764 #1769
• Meson is part of the release archive. #1672 #1694
• Improved documentation on the Meson and Spack package manager. #1694 #1720

Further Changes

• Added GitHub Workflow with ubuntu-latest/GCC 7.4.0 as CI step.
• Added GCC 9 to Travis CI to compile with C++20 support. #1724
• Added MSVC 2019 to the AppVeyor CI. #1780
• Added badge to fuzzing status.
• Fixed some cppcheck warnings. #1760
• Fixed several typos in the documentation. #1720 #1767 #1803
• Added documentation on the JSON_THROW_USER, JSON_TRY_USER, and JSON_CATCH_USER macros to control user-defined exception handling.
• Used GitHub's CODEOWNERS and SECURITY feature.
• Removed GLOB from CMake files. #1779
• Updated to Doctest 2.3.5.