Update scalapb 0.10 (#34)

- Drop Scala 2.11 compatibility
- Update Scalapb to 0.10.2

Author: angelcervera

README.md

@@ -30,7 +30,14 @@ EntityIterator.fromPbf(inputStream).count(_.osmModel == OSMTypes.Node)
     ```
     resolvers += "osm4scala repo" at "http://dl.bintray.com/angelcervera/maven"
     ``` 
- 
+## Selecting the right Versions
+| osm4scala | Scala | Scalapb |
+|:--------:|:------:|:-------:|
+| 1.0.4 | 2.12, 2.13 | 0.10.2 |
+| 1.0.3 | 2.11, 2.12, 2.13 | 0.9.7 |
+| 1.0.1 | 2.11, 2.12 | 0.5.47 |
+| 1.0 | 2.10, 2.11 | 0.5.47 |
+
 ## Performance
 The performance of the first version looks really good. You can find a resume in the section [Concurrent examples comparision](#concurrent-examples-comparision)
 

build.sbt

@@ -12,8 +12,7 @@ lazy val akkaVersion = "2.5.31"
 // Releases versions
 lazy val scala213 = "2.13.2"
 lazy val scala212 = "2.12.11"
-lazy val scala211 = "2.11.12"
-lazy val scalaVersions = List(scala213, scala212, scala211)
+lazy val scalaVersions = List(scala213, scala212)
 
 lazy val commonSettings = Seq(
   crossScalaVersions := scalaVersions,

project/scalapb.sbt

@@ -1,3 +1,3 @@
 addSbtPlugin("com.thesamet" % "sbt-protoc" % "0.99.31")
 
-libraryDependencies += "com.thesamet.scalapb" %% "compilerplugin" % "0.9.7"
+libraryDependencies += "com.thesamet.scalapb" %% "compilerplugin" % "0.10.2"