Confusion around Layout vs. Page in TagExtension #178

My understanding of a the Layout vs Page dichotomy is:

• Layout provides a wrapper while exposing the ability to render @inner_content
• Page is a terminal page that can be wrapped in a Layout

This all makes sense, except for some of the extensions. For example, Extensions.TagExtension requires you to provide a layout: key that points to a Tableau.Layout page… that doesn't expose a render @inner_content but just acts like a terminal page.

Maybe I'm overcomplicating this. Either it seems like TagExtension should have a template: key that passes assigns.posts to handled by a Tableau.Page and inserted into the graph for each tag, or there's some nuance about Tableau.Layout that I'm missing.