add 2.12.0 cross-build and upgrade scalatest accordingly

Author: daviddenton

project/Build.scala

@@ -7,11 +7,11 @@ object MyBuild extends Build{
  lazy val aRootProject = Project(id = projectName, base = file("."),
  settings = Seq(
  name := projectName,
- scalaVersion := "2.11.8",
- crossScalaVersions := Seq("2.10.6",scalaVersion.value),
+ scalaVersion := "2.12.0",
+ crossScalaVersions := Seq("2.10.6","2.11.8",scalaVersion.value),
  description := "Faithful extensions of the Scala standard library",
  libraryDependencies ++= Seq(
- "org.scalatest" %% "scalatest" % "3.0.0-RC4" % "test",
+ "org.scalatest" %% "scalatest" % "3.0.0" % "test",
  "org.scala-lang" % "scala-compiler" % scalaVersion.value % "provided"
  ),
  scalacOptions ++= Seq("-feature", "-deprecation", "-unchecked"),

project/build.properties

@@ -1 +1 @@
-sbt.version = 0.13.9
+sbt.version = 0.13.13