This is a bug-fix release with a couple of important fixes.

* Apply missing go fmt [76b2afe6](https://github.com/gohugoio/hugo/commit/76b2afe642c37aedc7269b41d6fca5b78f467ce4) [@bep](https://github.com/bep) 
* Fix panic on no output formats [f4605303](https://github.com/gohugoio/hugo/commit/f46053034759c4f9790a79e0a146dbc1b426b1ff) [@bep](https://github.com/bep) [#6924](https://github.com/gohugoio/hugo/issues/6924)
* Fix panic in 404.Parent [4c2a0de4](https://github.com/gohugoio/hugo/commit/4c2a0de412a850745ad32e580fcd65575192ca53) [@bep](https://github.com/bep) [#6924](https://github.com/gohugoio/hugo/issues/6924)