On: Introducing Heroku Fork

[bgentry]

Fun fact: `heroku fork` is implemented entirely in the CLI client using pre-existing APIs: https://github.com/heroku/heroku/blob/master/lib/heroku/comm...

If you wanted to build something like this, you could do so without any involvement from us by just using the (newly-documented) Heroku Platform API: https://devcenter.heroku.com/articles/platform-api-reference