This will replace the 'Attributes' page of an entity with a custom view.
This is a work in progress to confirm the validity of the feature, as well as gauging how much interest there is for these kinds of features. The first of such templates is the 'D&D 5th Edition - Monster Stat Block'. While 0.17 was concentrated on the API, this release opens up community attribute templates. With 0.18, we release some fun new features but also build the foundations for more community content.
