C++
- Avoid linking against libatomic in prebuilt protoc binaries (#5875)
- Avoid marking generated C++ messages as final, though we will do this in a future release (#5928)
- Miscellaneous build fixes
JavaScript
- Fixed redefinition of global variable f (#5932)
Ruby
- Replace strptime with custom implementation (#5906)
- Fixed the bug that bytes fields cannot be larger than 16000 bytes (#5924)
- Miscellaneous bug fixes