Quit REPL when Ctrl+C used instead of throwing exception.

[nrjais]

This fixes #5250.

[dottybot]

Hello, and thank you for opening this PR! 🎉

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Commit Messages

We want to keep history, but for that to actually be useful we have
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Please stick to these guidelines for commit messages:

1. Separate subject from body with a blank line
2. When fixing an issue, start your commit message with Fix #<ISSUE-NBR>:
3. Limit the subject line to 72 characters
4. Capitalize the subject line
5. Do not end the subject line with a period
6. Use the imperative mood in the subject line ("Add" instead of "Added")
7. Wrap the body at 80 characters
8. Use the body to explain what and why vs. how

adapted from https://chris.beams.io/posts/git-commit

Have an awesome day! ☀️

[mrveera]

LGTM

[allanrenucci]

LGTM. Can you squash your commits