# Functions
Done must be called when task is done.
Push ads new task to a queue with assigning new ID.
PushAndGetResult is the alternative way to push task.
Shift returns task from the queue.
UnShift returns task to the queue.
# Constants
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
tasks decription constants.
# Variables
ErrTimeout is a timeout error for tasks.