Global hotkey for Mac

[chaosdrop]

Maybe windows too, testing out the app on Mac. Overall, I like it thus far, but it really needs a global hotkey to summon the note window.

It would also be nice if it lived in the system tray area rather than the dock too. I use the mac equivalent to Ctrl+F4 on windows to close the window because [esc] just focuses the search bar, and since it lives in the dock that closes the app out completely.