Latest version of com.typesafe.akka:akka-http-core_2.12.0-M5
https://javadoc.io/doc/com.typesafe.akka/akka-http-core_2.12.0-M5
Current version 2.4.8
https://javadoc.io/doc/com.typesafe.akka/akka-http-core_2.12.0-M5/2.4.8
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.typesafe.akka/akka-http-core_2.12.0-M5/2.4.8/package-list