message: Don't wait for timer task completion on app quit (lib),
diff: @@ -219,7 +219,7 @@ void Context::Shutdown() {
  // cancel tasks but allow them finish
  {
  Poco::Mutex::ScopedLock lock(timer_m_);
  - timer_.cancel(true);
  + timer_.cancel(false);
  }
  // Stops all running threads and waits for their completion.
  