'<<=' operator deprecated

[feyman2016]

Hi, this line : scalaSource in Compile <<= (baseDirectory in Compile)(_ / "src") in build.sbt doesn't work now because the '<<=' operator has been deprecated, I used the := to substitute, and this works: scalaSource in Compile := (baseDirectory in Compile)(_ / "src").value .Here is the reference: http://www.scala-sbt.org/release/docs/Migrating-from-sbt-012x.html