Feat: added target configuration + event-factory support (#31) + Refactor: nest plugin specific errors + Refactor: log a debug msg on decode failure

[skip ci] update gemspec summary 

Version bump For elastic/logstash#7993 [ci skip]

fix vendoring of types.db file 

bump patch level for doc generation 

Make this Plugin compatible with JRuby 9k With the upgrade to JRuby 9k, the HMAC class was moved under the OpenSSL namespace and the signature was changed, this commit make sure the plugin still work under JRuby-1.7.X by creating the right method when the class is loaded into memory. Fixes #25

Fix log levels (#23) 

dependency logstash-core-plugin-api >= 1.60 <= 2.99 

Make sure all the gems were published under jruby 

Mass update for 2.0 plugin api changes