support Scala 2.13.0-M2

also gratuitously bump sbt version, and fix a stray execute bit

Author: SethTisue

.travis.yml

@@ -33,7 +33,7 @@ env:
   - SCALA_VERSION=2.12.1
   - SCALA_VERSION=2.12.2
   - SCALA_VERSION=2.12.3
-  - SCALA_VERSION=2.13.0-M1
+  - SCALA_VERSION=2.13.0-M2
 
 # there's no better way it seems.. https://github.com/travis-ci/travis-ci/issues/1519
 matrix:
@@ -46,7 +46,9 @@ matrix:
     - jdk: openjdk6
       env: SCALA_VERSION=2.12.2
     - jdk: openjdk6
-      env: SCALA_VERSION=2.13.0-M1
+      env: SCALA_VERSION=2.12.3
+    - jdk: openjdk6
+      env: SCALA_VERSION=2.13.0-M2
 
 # Increasing ReservedCodeCacheSize minimizes scala compiler-interface compile times
 script:

LICENSE

@@ -56,7 +56,7 @@ lazy val defaults = Seq(
     val latest210 = 6
     val latest211 = 11
     val latest212 = 3
-    val pre213 = List("M1")
+    val pre213 = List("M2")
     val skipVersions = Set("2.11.9", "2.11.10")
     val scala210and211Versions = (2 to latest210).map(i => s"2.10.$i") ++ (0 to latest211).map(i => s"2.11.$i")
       .filterNot(skipVersions.contains(_))
@@ -68,7 +68,7 @@ lazy val defaults = Seq(
   },
   scalaTestVersion := {
     val Some((2, scalaMajor)) = CrossVersion.partialVersion(scalaVersion.value)
-    if (scalaMajor >= 12) "3.0.3"
+    if (scalaMajor >= 12) "3.0.4"
     else "2.1.3"
   },
   resolvers += Resolver.mavenLocal,

build.sbt

@@ -1 +1 @@
-sbt.version=0.13.15
+sbt.version=0.13.16