Run dotty jmh benchmarks in CI.

The long sbt command in .travis.yml was getting unwieldy. This commit
adds a `testAll` command which can easily be run locally from the sbt
shell to test the command executed in CI.

Author: olafurpg

.travis.yml

@@ -3,7 +3,7 @@ language: scala
 env:
   global:
 
-script: sbt test:compile "hot -psource=scalap -w1 -f1" "; project compilation ; +test" "micro/jmh:run -w1 -f1"
+script: sbt testAll
 
 jdk:
   - oraclejdk8

build.sbt

@@ -6,6 +6,18 @@ def scala211 = "2.11.11"
 def dottyLatest = "0.2.0-RC1"
 scalaVersion in ThisBuild := scala211
 
+commands += Command.command("testAll") { s =>
+  "test:compile" ::
+    "compilation/test" ::
+    "hot -psource=scalap -wi 1 -i 1 -f1" ::
+    "++0.2.0-RC1" ::
+    "compilation/test" ::
+    "hot -psource=vector -wi 1 -i 1 -f1" ::
+    "++2.11.8" ::
+    "micro/jmh:run -w1 -f1" ::
+    s
+}
+
 resolvers += "scala-integration" at "https://scala-ci.typesafe.com/artifactory/scala-integration/"
 
 // Convenient access to builds from PR validation