Feature: early completion

[maksnester]

Hello guys, very nice app. Simple and clean.

I've just tried it for the first time and I was a bit confused when I couldn't to mark my item in list as completed. I planned task and finished it a bit earlier than I expected, so I tried to click on tomato and timer has been restarted so I just lost my task :) So, I think it's important to have such feature as early completion.