steps to reproduce: If using cook timer without audio it is easy to miss timer end event

expected behavior: window moves itself up/down for a short period of time to attract attention

source code patch in attached.

I generally dislike window effects like this...especially on cross-platform software where the results of such an effect might be unpredictable or buggy...

I instead propose having the timer simply being raised to the top and...IN the window having a blinking effect or something.

But window managers are sometimes wonky and I think this would be a better way to solve this issue.

Thanks

~xgpt