Gems4 jls-grok 0.11.5 8,358,606 May 01, 2018 jls-lumberjack 0.0.26 7,266,067 October 19, 2015 filewatch 0.9.0 2,736,501 August 08, 2016 logstash-devutils 2.6.3 1,568,659 October 30, 2025