Various scala-2.13.0-M5 fixes

Clearer imports in TcpDnsClient

Accept SVG's when checking if diagrams were generated

Fix akka-actor MiMa issues

akka-testkit scalafix changes

Update scalatest to 2.13-released snapshot

akka-stream scalafix changes

Update ssl-config

To version that's released with -M5

Take elements directly out of buffer

Manually fix immutable.Seq / Doc link

Make sure the right Concat, Sink is imported

akka-stream binary compat

akka-stream-testkit scalafix

akka-actor-tests scalafix

Eta-expensions

akka-stream/src/main/scala/akka/stream/impl/QueueSource.scala

@@ -186,7 +186,10 @@ import scala.util.control.NonFatal
       override def offer(element: T): Future[QueueOfferResult] = {
         val p = Promise[QueueOfferResult]
         callback.invokeWithFeedback(Offer(element, p))
-          .onFailure { case NonFatal(e) ⇒ p.tryFailure(e) }(akka.dispatch.ExecutionContexts.sameThreadExecutionContext)
+          .onComplete {
+            case scala.util.Failure(NonFatal(e)) ⇒ p.tryFailure(e)
+            case _                               ⇒ ()
+          }(akka.dispatch.ExecutionContexts.sameThreadExecutionContext)
         p.future
       }
       override def complete(): Unit = callback.invoke(Completion)