AcurateTimerC-

##C# class for accurate timing.

Origin - https://social.msdn.microsoft.com/Forums/en-US/6cd5d9e3-e01a-49c4-9976-6c6a2f16ad57/1-millisecond-timer

Modified by - http://stackoverflow.com/a/31612770/3409931

Modified by myself to implement dispatcher task based interface for callbacks.