Improve global show/hide window

[dimateos]

Describe the current limitation
Currently the window show/hide flow is not very user friendly when I simply want to peek at time left / to leave:

Clicking in a pinned taskbar icon or relaunching from start menu does not make the app window appear, you are forced to click on the tiny tray menu icon. Then you have to close with alt-f4 or click X on the window.

Describe the proposed feature or enhancement
Potential improvements:

• Double clicking the tray icon when the window is already visible hides it: quite simple and probably enough
• Global hotkey to show/hide app
• Time left / to leave as tooltip for the tray icon
• Show window when relaunching the app with an instance already in the background

Additional context
Anyway thanks for the app! I will start using and see how it goes so I wanted to share a few ideas...