[MinimizeToTray] "Minimize to tray on close" suggestion

[Dino]

Hi!

Nice job on your Minimize To Tray add-on. But I think it coud be even
better. I have a suggestion.

MINIMIZE TO THE TRAY ON CLOSE would be much better if when you click the
"close" (the X button), it would not minimize Thunderbird the exact
millisecond. It would be much better if it would happen once you release
the mouse button UP, like the minimize, maximize and close buttons work.

ALWAYS MINIMIZE TO TRAY seems to be ok, but "ON CLOSE" could be better.

Keep up the good work! :)

Dino