Need to stop, don't work at task switch

[kraiz]

As mentioned by @daroczig in #13

I'd add an extra note, that you have to stop the timer if you want to log something, as if you do not click on "stop the timer" and simply change to a new task, then the time is not logged.

[kraiz]

Tracked this down to the following hamster behavior:

• Stopping a task will set the task's end time to the exact stop second
• Switching to another/new task will set the end time to the last minute with zeroed seconds

[kraiz]

Doesn't hurt me too much. Pull requests welcome.

[daroczig]

I can live with it as well -- I got used to stop the time tracker instead of changing to new tasks right away, and probably it's a much healthier approach anyway :)

[lechndo]

A simple way to overcome this is to use a "check-interval" > 60 seconds.
Checking the hamster log too often is not helpful anyway.