Simulate trailing whitespace in empty greater blocks just like drawers.

src/main.rs

@@ -1,7 +1,8 @@
 #![feature(round_char_boundary)]
+use ::organic::parser::document;
+
 use crate::init_tracing::init_telemetry;
 use crate::init_tracing::shutdown_telemetry;
-use ::organic::parser::document;
 mod init_tracing;
 
 const TEST_DOC: &'static str = include_str!("../toy_language.txt");