After pausing getDuration() returns 0

[feimosi]

Hi, I think .getDuration() should always return the actual remaining time, whether it's running or being paused. By the way it'd be also great to see a corresponding method with time passed, not only duration left.

[husa]

Made appropriate changes to getDuration(). Now it'll return time when timer is started or paused, but 0 when it wasn't started or already stopped.
As of get elapsed time, feel free to add this via PR.

[feimosi]

Getting elapsed time turned out to be too tricky to implement with current code structere. Maybe another time.

[husa]

Actually, all you have to do is to save initial duration in start
smth like

duration && (this._.initialDuration = duration)

Then it'll be as easy as this._.initialDuration - this.getDuration()