AddTask add task with name.

ClearTask clear all tasks.

DeleteTask delete task with name.

GracefulShutdown wait all task done.

NewMapSorter create new tasker map.

NewTask add new task with name, time and func.

StartTask start all tasks.

StopTask stop all tasks.

TimeoutOption return a option to set timeout duration for task.

MapSorter sort map for tasker.

Schedule time taks schedule.

Task task struct It's not a thread-safe structure.

Option interface.

Tasker task interface.

TaskFunc task func type.