Switch to M3 (#403)

Signed-off-by: Carlos Quiroz <carlos.m.quiroz@gmail.com>

.travis.yml

@@ -8,7 +8,7 @@ scala:
   - 2.11.12
   - 2.12.12
   - 2.13.3
-  - 3.0.0-M2
+  - 3.0.0-M3
 
 env:
   - SCALAJS_VERSION=       ADOPTOPENJDK=8

build.sbt

@@ -53,7 +53,7 @@ lazy val junit = libraryDependencies += "com.novocode" % "junit-interface" % "0.
 lazy val scala211 = "2.11.12"
 lazy val scala212 = "2.12.12"
 lazy val scala213 = "2.13.3"
-lazy val scala30  = "3.0.0-M2"
+lazy val scala30  = "3.0.0-M3"
 
 lazy val compat = MultiScalaCrossProject(JSPlatform, JVMPlatform, NativePlatform)(
   "compat",

project/plugins.sbt

@@ -4,7 +4,7 @@ val scalaJSVersion =
 val scalaNativeVersion =
   Option(System.getenv("SCALANATIVE_VERSION")).filter(_.nonEmpty).getOrElse("0.3.9")
 
-addSbtPlugin("ch.epfl.lamp"           % "sbt-dotty"                     % "0.5.0")
+addSbtPlugin("ch.epfl.lamp"           % "sbt-dotty"                     % "0.5.1")
 addSbtPlugin("org.scala-js"           % "sbt-scalajs"                   % scalaJSVersion)
 addSbtPlugin("org.portable-scala"     % "sbt-scalajs-crossproject"      % crossVer)
 addSbtPlugin("org.scala-native"       % "sbt-scala-native"              % scalaNativeVersion)