Latest version of com.softwaremill.sttp:akka-http-backend_2.12
https://javadoc.io/doc/com.softwaremill.sttp/akka-http-backend_2.12
Current version 1.3.0-RC4
https://javadoc.io/doc/com.softwaremill.sttp/akka-http-backend_2.12/1.3.0-RC4
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.softwaremill.sttp/akka-http-backend_2.12/1.3.0-RC4/package-list