Upgrade Dotty to 3.0.0

Author: anatoliykmetyuk

README.md

@@ -21,7 +21,7 @@ Any version number that starts with `0.` is automatically recognized as Dotty,
 you don't need to set up anything:
 
 ```scala
-def scalaVersion = "3.0.0-RC3"
+def scalaVersion = "3.0.0"
 ```
 
 #### Nightly builds

build.sc

@@ -2,6 +2,6 @@ import mill._, scalalib._
 
 object root extends SbtModule {
   def millSourcePath = ammonite.ops.pwd
-  def scalaVersion = "3.0.0-RC3"
+  def scalaVersion = "3.0.0"
   def publishVersion = "0.1.0"
 }

mill

@@ -3,7 +3,7 @@
 # This is a wrapper script, that automatically download mill from GitHub release pages
 # You can give the required mill version with MILL_VERSION env variable
 # If no version is given, it falls back to the value of DEFAULT_MILL_VERSION
-DEFAULT_MILL_VERSION=0.9.3-21-002361
+DEFAULT_MILL_VERSION=0.9.7
 
 set -e