Add support for application in plain links.

src/types/object.rs

@@ -108,6 +108,7 @@ pub struct PlainLink<'s> {
     pub path: &'s str,
     pub raw_link: &'s str,
     pub search_option: Option<&'s str>,
+    pub application: Option<&'s str>,
 }
 
 #[derive(Debug, PartialEq)]