Merge branch 'mill' into dotty-0.13-mill

Author: Aggelos Biboudis

README.md

@@ -64,12 +64,6 @@ by:
 ivy"a::b:c".withDottyCompat(scalaVersion())
 ```
 
-Or you can alternatively use:
-
-```scala
-    libraryDependencies := libraryDependencies.value.map(_.withDottyCompat(scalaVersion.value))
-```
-
 This will have no effect when compiling with Scala 2.x, but when compiling
 with Dotty this will change the cross-version to a Scala 2.x one. This
 works because Dotty is currently retro-compatible with Scala 2.x.