Updated clock so it can be queried.

src/document.rs

@@ -3,7 +3,7 @@ mod create;
 mod definition;
 mod field;
 mod record;
-mod session;
+// mod session;
 
 use record::{InternalRecord, InternalRecords, Oid};
 
@@ -12,7 +12,7 @@ pub use create::{CreateDoc, IndexType};
 pub use definition::{DocDef, DocFuncType};
 pub use field::{Field, FieldType, MissingTranslation};
 pub use record::{Record, Records};
-pub use session::Session;
+//pub use session::Session;
 
 #[derive(Clone, Debug, Eq, Hash, PartialEq)]
 enum DocFeature {