Browser timer alert

Could you add Timer Starts by "Enter" Key

I love your Extension, It is a Life Saver!~ Thank you so much!

BTW, It would be greatly helpful if followings features could be added:
1. Start Timer by "Enter" key or "Start" button.
2. Show Remaining Set-Timer on Tab Title.
3. Set Timer by Hrs/Minutes as well.
4. Easy Timer Settings that is configurable by a User,
Set Timer 1 >> Set 3mins
Set Timer 2>> Set 18mins
Set Timer 3>> Set 1hr 10mins

Thank you!
WILL