subsecond scheduling for "@every"

[gezimblliku]

Since subsecond scheduling is not supported even when using @ every, I forked the subject to remove the second limit (mostly to prevent long unit tests). I wanted to know the reason why this limitation is added first place,to prevent any degradation of performance or any potential misschedule of jobs?

[ivikasavnish]

Subsecond schedule can be manually entered into actual definition of minute job . This will avoid over engineering of matured library