Feature Proposal: Setting if Script should be added in `<head>` or prepended to closing `</body>`

A nice addition to this extension would be if a new logic is implemented which allows admins to configure, if the script should be used in the `<head>` as before, or if it should be prepended to the closing `</body>` tag. 

Is this something that would be good addition to this extension or should a new extension be created for that?