Make swssion pass on any additional information.

src/lib.rs

@@ -8,6 +8,7 @@ mod utils;
 
 use client::{Client, ClientLink, Reply, Request};
 use clock::Clock;
+use document::Document;
 use field::Field;
 use queue::Queue;
 use session::Session;
@@ -21,6 +22,7 @@ impl MoreThanText {
     pub fn new() -> Self {
         let queue = Queue::new();
         Clock::start(queue.clone());
+        Document::start(queue.clone());
         Session::start(queue.clone());
         Self {
             client_link: Client::start(queue.clone()),