Thank you, thank you, thank you for making this!

Something I often do with both the macOS switcher (which this switcher imitates) and the Windows switcher and is really muscle-memoried into me is to close the switcher with the Escape key. I might open the switcher, look around, change my mind, and then close the switcher with Escape (obviously while Alt is still held down and with no switching to the highlighted app).

I would love for window-switcher to have this simple functionality: Close the switcher on Escape key.

At the moment any Alt-based hotkeys not explicitly handled by window-switcher's keyboard handler falls through to the active window (like Alt-F4!), and Alt+Esc is a global Windows hotkey ("Cycle through items in the order in which they were opened."), which really messes up my muscle memory when using window-switcher. I think window-switcher should consume as many keystrokes as is possible while the switcher window is visible (see #81).