Update README functionality explanation

Author: JonatanWaern

README.md

@@ -6,9 +6,14 @@
 
 The DLS provides a server that runs in the background, providing IDEs,
 editors, and other tools with information about DML device and common code.
-It currently only supports basic syntax error reporting.
-Support for 'goto definiton', sumbol search, and other common IDE
-operations is planned.
+It currently supports basic syntax error reporting, symbol search,
+'goto-definition', 'goto-implementation', 'goto-reference', and 'goto-base'.
+It also has some basic configurable linting support, in the form of warning
+messages.
+
+Future planned features are extended semantic and type analysis, basic
+refactoring patterns, improved language construct templates, renaming
+support, and more.
 
 Do note that the DLS only supports DML 1.4 code, and there are no plans to
 extend this functionality to support DML 1.2 code. It can only perform
@@ -23,7 +28,7 @@ Simply run "cargo build --release" in the checkout directory.
 The DLS is built to work with the Language Server Protocol, and as such it in
 theory supports many IDEs and editors. However currently the only implemented
 language client is the Simics Modeling Extension for Visual Studio Code, which
-not yet publicly available.
+is not yet publicly available.
 
 See [clients.md](clients.md) for information about how to implement
 your own language client compatible with the DML language server.