Handle semantic token deltas

crates/rust-analyzer/src/document.rs

@@ -1,9 +1,9 @@
 //! In-memory document information.
 
 /// Information about a document that the Language Client
-// knows about.
-// Its lifetime is driven by the textDocument/didOpen and textDocument/didClose
-// client notifications.
+/// knows about.
+/// Its lifetime is driven by the textDocument/didOpen and textDocument/didClose
+/// client notifications.
 #[derive(Debug, Clone)]
 pub(crate) struct DocumentData {
     pub version: Option<i64>,