Add post_blank to the rust types.

src/context/latex_fragment.rs

@@ -11,6 +11,7 @@ use super::macros::render;
 #[serde(rename = "latex_fragment")]
 pub(crate) struct RenderLatexFragment {
     value: String,
+    post_blank: organic::types::PostBlank,
 }
 
 render!(
@@ -21,6 +22,7 @@ render!(
     {
         Ok(RenderLatexFragment {
             value: original.value.clone(),
+            post_blank: original.post_blank,
         })
     }
 );