• Fixed null-output-pointer dereferences in the C API (issue #753): ContextData_Parms and Modulus_Create2 wrote the created handle without validating the output pointer.
• Fixed null-element dereferences in the C API (issue #754): EncParams_SetCoeffModulus, Evaluator_AddMany, Evaluator_MultiplyMany, and KSwitchKeys_AddKeyList validated the handle array but not its elements.
• Fixed EncParams_GetPlainModulus (issue #755) to return an independently allocated Modulus, owned by the caller.
• Fixed multiple instances where a C++ exception could leak across the C API boundary, resulting in process termination.
• Fixed some bugs and improved unit tests.
• Improved MinGW CI pipeline to cover also sealc.
• Added C++14 CI jobs for Windows, with both MSVC and MinGW.
• Added documentation in README.md for building with MinGW-w64 on Windows.
• Added a configure-time aligned allocator check.
• Fixed a bug where SEAL_USE_INTRIN=OFF was in some cases not taking effect properly in an existing build tree.
• Fixed a bug in seal_combine_archives.
• Updated dependencies.