On http://repl.it, I accidentally created an infinite loop in Python 3. I tried to close the tab, but Firefox already stopped responding. It wouldn't respond even after a while, so I force quitted FF. Then, I tried to reopen it, and it bounced for a while. It wouldn't reopen, so I force quitted and reopened again. Now, it is just sitting on my Dock with the little black "open" dot below it. Clicking on the icon does nothing.
How can I fix this? (I hate Safari) I don't mind using Bash/Terminal, if it makes a difference. Also, it would be nice if it didn't reboot all my other apps as well, but if worst comes to worst, this is okay. Thanks!