Gems4 jls-grok 0.11.5 8,307,990 May 01, 2018 jls-lumberjack 0.0.26 7,242,428 October 19, 2015 filewatch 0.9.0 2,735,019 August 08, 2016 logstash-devutils 2.6.3 1,539,658 October 30, 2025