fix bad artifacts by disabling OSGi support

fixes #51

Author: SethTisue

Diff for: build.sbt

@@ -9,7 +9,14 @@ lazy val collectionContrib = crossProject(JVMPlatform, JSPlatform)
   .crossType(CrossType.Pure)
   .in(file("."))
   .settings(ScalaModulePlugin.scalaModuleSettings)
-  .jvmSettings(ScalaModulePlugin.scalaModuleSettingsJVM)
+  // as per #71, we are not currently attempting to support OSGi in this repo
+  .disablePlugins(SbtOsgi)
+  // disabling the plugin isn't sufficient; we also must prevent sbt-scala-module
+  // from putting OSGi stuff in our settings. at present (sbt-scala-module 2.1.3),
+  // scalaModuleSettingsJVM contains *only* OSGi stuff, so the easiest thing is
+  // just to omit it.  this isn't future-proof; some future sbt-scala-module
+  // might put additional stuff in scalaModuleSettingsJVM
+  // .jvmSettings(ScalaModulePlugin.scalaModuleSettingsJVM)
   .settings(
     name := "scala-collection-contrib",
     scalacOptions ++= Seq("-opt-warnings", "-language:higherKinds", "-deprecation", "-feature", "-Xfatal-warnings"),
@@ -25,10 +32,7 @@ lazy val collectionContrib = crossProject(JVMPlatform, JSPlatform)
     useCoursier := false
   )
   .jvmSettings(
-    scalaModuleMimaPreviousVersion := Some("0.1.0"), // why only in jvmSettings?
-    // TODO: osgi settings; not trivial because of split packages.
-    // See https://github.com/scala/scala-collection-compat/pull/226
-    // OsgiKeys.exportPackage := Seq(s"scala.collection.*;version=${version.value}"),
+    scalaModuleMimaPreviousVersion := Some("0.1.0")
   )
   .jsConfigure(_.enablePlugins(ScalaJSJUnitPlugin))
   .jsSettings(