Changes sbt 1.6.1 (was 1.5.7) #998 by @raboof fix: ipv6 match host #1001 by @WayneWang12 latest akka-http version #1003 by @sebastian-alfers Remove old badges #1002 by @ennru Update release procedure #1000 by @raboof Support for log4j2 log levels #973 by @RAtioNAn