* 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
Added NOMINMAX as a preprocessor define for Windows. Otherwise some Windows headers define min/max as macros which interferes with std::numeric_limits::min/max
Added poco_assert_msg and poco_assert_msg_dbg, which are equivalent to poco_assert and poco_assert_dbg, respectively, but support an extra text parameter.
- removed support for 5- and 6-byte sequences
- fixed error counting in StreamConverterBuf::readFromDevice()
- added std::dec to poco_stdout_dbg and poco_stderr_dbg macros