Update version number to 2019-09

Author: ivan-gomes

build.sbt

@@ -1,7 +1,7 @@
 name := """SysML-v2-API-Services"""
 organization := "org.omg"
 
-version := "2019-10-04"
+version := "2019-09"
 
 javacOptions ++= Seq("-source", "11", "-target", "11", "-Xlint")
 
@@ -32,4 +32,4 @@ compile in Compile := (compile in Compile).dependsOn(Def.task({
 javacOptions in Compile ++= Seq("-s", "generated")
 
 sources in(Compile, doc) := Seq.empty
-publishArtifact in(Compile, packageDoc) := false
+publishArtifact in(Compile, packageDoc) := false