Add post_blank to the rust types.

src/context/target.rs

@@ -11,10 +11,12 @@ use super::macros::render;
 #[serde(rename = "target")]
 pub(crate) struct RenderTarget {
     id: String,
+    post_blank: organic::types::PostBlank,
 }
 
 render!(RenderTarget, ITarget, original, _render_context, {
     Ok(RenderTarget {
         id: original.id.clone(),
+        post_blank: original.post_blank,
     })
 });