Change the version to match the Rust version

And add -preview to the version string

Author: nrc

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "rls"
-version = "0.1.0"
+version = "0.121.0"
 authors = ["Nick Cameron <[email protected]>", "Jonathan Turner <[email protected]>", "The RLS developers"]
 description = "Rust Language Server - provides information about Rust programs to IDEs and other tools"
 license = "Apache-2.0/MIT"

Cargo.toml

@@ -72,7 +72,7 @@ pub fn main() {
 
     if let Some(first_arg) = ::std::env::args().skip(1).next() {
         match first_arg.as_str() {
-            "--version" | "-V" => println!("rls {}", version()),
+            "--version" | "-V" => println!("rls-preview {}", version()),
             "--help" | "-h" => println!("{}", help()),
             _ => cmd::run(),
         }