Merge pull request #231 from SethTisue/update-post-1.0.0-release

update readme and build, post 1.0.0

Author: SethTisue

README.md

@@ -1,12 +1,20 @@
 # scala-java8-compat [![Build Status](https://travis-ci.org/scala/scala-java8-compat.svg?branch=master)](https://travis-ci.org/scala/scala-java8-compat) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_2.11.svg?label=latest%20release%20for%202.11"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_2.11) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_2.12.svg?label=latest%20release%20for%202.12"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_2.12) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_2.13.svg?label=latest%20release%20for%202.13"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_2.13)
 
 
-A Java 8 compatibility kit for Scala.
-
-The API is currently still experimental: we do not yet guarantee source or binary compatibility with future releases.
+A Java 8 compatibility kit for Scala 2.12 and 2.11.
 
 Javadoc is [here](https://javadoc.io/doc/org.scala-lang.modules/scala-java8-compat_2.13/latest/index.html).
 
+## Do you need this?
+
+If you are using Scala 2.13 or newer only, then don't use this library!  Use the classes under `scala.jdk` instead; they were added to the standard library in 2.13.
+
+We do publish 2.13 and 3.0 artifacts of scala-java8-compat, but they're only intended to be used in projects which crossbuild with 2.12 and/or 2.11.
+
+## Maintenance status
+
+This library is community-maintained.  (The Scala team at Lightbend provides infrastructure and oversight.)
+
 ## Functional Interfaces for Scala functions
 
 A set of [Functional Interfaces](https://docs.oracle.com/javase/8/docs/api/java/lang/FunctionalInterface.html)

build.sbt

@@ -73,11 +73,7 @@ lazy val scalaJava8Compat = (project in file("."))
 
     libraryDependencies += "com.novocode" % "junit-interface" % "0.11" % "test",
 
-    scalaModuleMimaPreviousVersion := (CrossVersion.partialVersion(scalaVersion.value) match {
-      // pending resolution of https://github.com/scalacenter/sbt-version-policy/issues/62
-      case Some((3, _)) => None
-      case _            => Some("1.0.0-RC1")
-    }),
+    scalaModuleMimaPreviousVersion := Some("1.0.0"),
 
     mimaBinaryIssueFilters ++= {
       import com.typesafe.tools.mima.core._, ProblemFilters._