Gems4 jls-grok 0.11.5 8,375,724 May 01, 2018 jls-lumberjack 0.0.26 7,274,408 October 19, 2015 filewatch 0.9.0 2,736,916 August 08, 2016 logstash-devutils 2.6.3 1,579,675 October 30, 2025