Moved update into action module.

src/action.rs

@@ -7,6 +7,7 @@ mod query;
 mod reply;
 mod request_data;
 mod show;
+mod update;
 mod user;
 
 pub use crate::document::{DocDef, Field, FieldType, Records};
@@ -19,4 +20,5 @@ pub use query::Query;
 pub use reply::Reply;
 use request_data::RequestData;
 pub use show::Show;
+pub use update::Update;
 pub use user::UserAction;