Prevent uncaught exception in some cases

[wwwouter]

If something goes wrong in the code contained by setImmediate, an uncaughtException is thrown.

The code in this pull requests wraps the code in a try/catch block and emits an error if an error is thrown.

[kevva]

Could you add a test for this?

[sindresorhus]

Can you move the contents of the try into a function and call it from the try, so we don't add more nesting.

[wwwouter]

I've put the code in a getResponse function and added a test.
This test will fail with the old code, but succeeds with the changes.

I've also added some files to work on VS Code on Windows. I can remove these if you want.

[wwwouter]

Also: Travis is timing out, but this shows it's ok for at least node 4 and 8: https://travis-ci.org/sindresorhus/got/builds/346221646

[kevva]

I've also added some files to work on VS Code on Windows. I can remove these if you want.

Yes :).

[wwwouter]

Ok, removed the .vscode folder!

[sindresorhus]

Thanks :)

[wwwouter]

You're welcome!
Could you take a quick peek at #461?
Now at least I can catch the error, but it would be even better if there wasn't an error to catch :)