ScheduleTimer.NetStandard
ref. https://www.codeproject.com/Articles/6507/NET-Scheduled-Timer
ref. https://www.codeproject.com/Articles/6507/NET-Scheduled-Timer
ref. https://www.codeproject.com/Articles/6507/NET-Scheduled-Timer
ref. https://www.codeproject.com/Articles/6507/NET-Scheduled-Timer
MIT License