Introduce the corresponding non-render types.

src/context/mod.rs

@@ -0,0 +1,15 @@
+mod blog_post_page;
+mod document_element;
+mod element;
+mod global_settings;
+mod heading;
+mod object;
+mod section;
+
+pub(crate) use blog_post_page::RenderBlogPostPage;
+pub(crate) use document_element::RenderDocumentElement;
+pub(crate) use element::RenderElement;
+pub(crate) use global_settings::GlobalSettings;
+pub(crate) use heading::RenderHeading;
+pub(crate) use object::RenderObject;
+pub(crate) use section::RenderSection;