Upgrade to sbt 1.2.8, Scalatex 0.3.11 and scalafmt 2.0.0.

The upgrades of the two compiler plugins unfortunately had to be
done in lockstep with the upgrade to sbt 1.x.

Author: sjrd

.scalafmt.conf

@@ -1,4 +1,6 @@
+version = 2.0.0-RC5
 project.git = true
 style = Scala.js
 project.includeFilters = ["src/main/scala/org/scalajs/.*\\.scala"]
-bestEffortInDeeplyNestedCode = true
+maxColumn = 79
+docstrings = JavaDoc

.travis.yml

@@ -2,7 +2,7 @@ sudo: false
 language: scala
 script:
   - sbt ++$TRAVIS_SCALA_VERSION package doc example/compile
-  - sbt scalafmtTest
+  - sbt scalafmtCheck
 scala:
   - 2.10.7
   - 2.11.12

project/build.properties

@@ -1 +1 @@
-sbt.version=0.13.17
+sbt.version=1.2.8

project/build.sbt

@@ -3,6 +3,6 @@ val scalaJSVersion =
 
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % scalaJSVersion)
 
-addSbtPlugin("com.lihaoyi" % "scalatex-sbt-plugin" % "0.3.9")
+addSbtPlugin("com.lihaoyi" % "scalatex-sbt-plugin" % "0.3.11")
 
-addSbtPlugin("com.geirsson" % "sbt-scalafmt" % "0.6.8")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.0.0")

src/main/scala/org/scalajs/dom/experimental/intl/Intl.scala

@@ -195,6 +195,7 @@ object DateTimeFormatOptions {
       second: js.UndefOr[String] = js.undefined,
       timeZoneName: js.UndefOr[String] = js.undefined
   ): DateTimeFormatOptions = {
+    // format: off
     js.Dynamic
       .literal(
           localeMatcher = localeMatcher,
@@ -212,6 +213,7 @@ object DateTimeFormatOptions {
           timeZoneName = timeZoneName
       )
       .asInstanceOf[DateTimeFormatOptions]
+    // format: on
   }
 }