* fix(ActiveRecord): missing ActiveRecordLib_API definitions for clang/gcc.
* fix(FPEnvironment): export FPEnvironmentImpl classes (#4393, #3331)
* fix(Crypto): export *Impl classes used from inlines (#4393, #3331)
* fix(Dynamic): explicitly instantiate and export Dynamic::Struct for string and int (-fvisibility=hidden) (#4393, #3331)
* fix(JSON): explicitly instantiate and export SharedPtr for JSON::Array and JSON::Object (-fvisibility=hidden) (#4393, #3331)
* enh(CMake): Set symbol visibility to hidden (#4393, #3331)
* enh(configure): user c++17 standard for iphone, Darwin and ARM-Linux.
* fix(UTF): explicitly instantiate and export 16 and 32-bit strings (-fvisibility=hidden) (#4393, #3331)
* fix(RecordSet): make Extraction.h internal and instantiate RecordsSet::column template functions only for supported types. (-fvisibility=hidden) (#4393, #3331)
* fix(UTF): fix explicitly instantiation on Windows (-fvisibility=hidden) (#4393, #3331)
* enh(CMake): Add github jobs for macOS with visibility set to hidden (#4393, #3331)
* fix(CppParser): Add missing declarations for CppParser_API (#4393, #3331)
* enh(CMake): Enable more options in github jobs for macOS with visibility set to hidden (#4393, #3331)
* fix(MongoDB): Add missing MongoDB_API (#4393, #3331)
* add sendfile method for streamsocket
* add mswsock.lib to the project files and templates
* remove /DPOCO_NO_AUTOMATIC_LIBS for cmake windows build
* merge from upstream
* merge from upstream
* fix code stile
add NotImplemented exception for unsupported platforms
exculude <sys/sendfile.h> for POCO_EMSCRIPTEN, because https://
github.com/emscripten-core/emscripten/pull/16234
* add iostream include for std::cout
* fix compilation for emscripten (wrap sendfile)
* fix shellcheck warnings; add some ci ignore test entries
* fix(make): Redirect build stderr to a file #4112
* enh(dev): add vscode run script and launch items for tests
* As of C++11, std::swap is noexcept. #2386
* fix(Any): remove throw on swap
* fix(Any): As of C++11, std::swap is noexcept. #2386
* fix(Any): make size const #2386
* fix(SimpleRowFormatter): clang won't compile noexcept #2386
* a couple of arm fixes
* fix(Any): As of C++11, std::swap is noexcept. #2386
* fix(AnyTest): local() for POCO_NO_SOO# 2386
* test(RSACipher): RSA encryption without private key #2367
* chore(RSACipherTest): delete ciphers #2367
