* feat(AsyncObserver): Improve NotificationCenter speed and usability #4414
* fix(Notification): add missing header
* feat(Any): add checkers for holding nullptr #4447
* feat(NotificationCenter): g++ build and refactoring #4414
* fix(Observer): compile errors on some compilers #4414
* fix(NotificationCenter): compile errors #4414
* chore(ParallelSocketAcceptor): remove unnecessary include and using from header
* feat(AsyncNotificationCenter): add #4414
* test(AsyncNotificationCenter): add mixed observer types to the test #4414
* fix(AsyncNotificationCenter): hangs on program exit #4414
* fix(dev): friend not honored, temporarily make private members public
* fix(AsyncNotificationCenter); remove default #4414
* feat(format): Add string_view format type spec #4409
* chore(Types): add demangle
* fix(Data): Oracle failing ODBC tests #4368
* fix some CQL and fuzz warnings; add Var::typeName()
* fix(build): -std=c++17 and c11
* fix windows build
* fix(Foundation): test apps vs projects c++17
* chore(build): remove uneeded compiler flag
* fix(VarHolder): number of digits range check for int->float conversion (reported by CIFuzz)
* fix(test): CIFuzz
* fix(CIFuzz): another attempt
* fix(progen): add LanguageStandard (stdcpp17, stdc11); regenerate vs170 projects
* fix(CiFuzz): add int->float precision loss barrier; fix erroneous number of digits logic
* enh(Var): silent loss of precision on int->float conversion #4423
* enh(Var): silent loss of precision on int->float conversion #4423
* chore(build): remove old build files
* chore: fix missing parens warning
* enh(Thread_POSIX): prevent double-joining; add error description to exceptions
* fix(Data): unresolved Column<long> linkage in test
* fix(demangle): determine type name from template parameter; add eror diagnostic for demangling failures
* chore(buildwin): remove old vs versions from build and progen scripts; update documentation
* chore(buildwin): remove leftover closing curly
* add visitor pattern implementation for Poco::Dynamic::Var
* add changes to Makefile and vcxproj for VarVisitor
* resolve review comments Poco::Dynamic::Var
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Co-authored-by: Alexander B <bas524@ya.ru>
