Heroku console (IRB) with no "multiline"

If you need to paste a script in the Heroku console (IRB) with multiple lines and you notice it's very slow to finish pasting all the code, you can use the `--nomultiline` tag to disable multiline and let you run your script faster

```
heroku run 'bundle exec rails c -- --nomultiline'
````

juan-lopez
March 1, 2021
