make messagecountermanager available
Store message counters in timestamp keyed maps
Merge pull request #3 from smasset/handle-old-message-timestamp

Handle old message timestamp
setAdditionalData for LogMessage
Merge branch 'master' of github.com:Graylog2/graylog2-plugin-interfaces
[maven-release-plugin] prepare release graylog2-plugin-0.10.7
[maven-release-plugin] prepare for next development iteration