Removes scala-library as a dependecy of the API/SPI as well as enables Maven-style publishing

Author: viktorklang

spi/build.sbt

@@ -2,4 +2,10 @@ name := "reactive-streams-spi"
 
 javacOptions in compile ++= Seq("-encoding", "UTF-8", "-source", "1.6", "-target", "1.6", "-Xlint:unchecked", "-Xlint:deprecation")
 
+autoScalaLibrary := false
+
+crossPaths := false
+
+publishMavenStyle := true
+
 Common.javadocSettings