Please document HasAttributes->getDirty() on Eloquent Models in the Laravel docs

[HenkPoley]

Seems to be pretty old functionality; I find it locally in a stock Laravel 5.4, maybe older.

It is not in the main docs.

[henzeb]

You can do it your self. The doc is maintained by the community

[shaedrich]

@HenkPoley Feel free to submit a PR at laravel/docs, although chances for it being rejecting are generally high