Adds the slash command /quit to quit the game instantly.
The reason I made this is because the other day my mouse died (it's not even wireless!), and I was in the middle of a fight. I tried pressing Alt-F4 to quit the game, but the game just asked me "Are you sure you want to quit?" and wanted me to click "yes" or "no" but obviously I couldn't without a mouse. With this extremely simple addon, I can now just hit the Enter key and type in /quit and I'll quickly exit the game without it asking me if I really want to quit.