[racket] keyboard cancel shortcut in mac dialogs: thanks!

I was just using DrRacket, and without thinking, used cmd-period to cancel a modal dialog… and it worked! I did a double-take, and then tried it out in other places, too. Nice!

I took a quick look through the recent commits, then realized that since my DrR hasn't been updated recently, this probably happened a month ago, or so, and I just now noticed it. 

Anyhow, I'm guessing this was either Robby or Matthew (or both). Either way: thanks!

John

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