Merge pull request #27 from tturpen/master

JsonUtil revisions fixing bug with Concrete metadata pairs not being properly stored or retrieved.
Reverted proto file header to 4 bytes
Remove outdated tac reader
Update TAC09 -> Concrete ingester
Prepare 1.1.6 release
Prepare 1.1.7-SNAPSHOT development
Merge pull request #29 from jayded/master

Update to new Protobuf Writer
prepare 1.1.7 release
prepare 1.1.8-SNAPSHOT for development
Added new version of CommunicationValidator.java.
Fix CommunicationValidator.java for concrete 1.1.0
Added writing out of event spans for the Situations in a communication.
Added writing out of event spans for the Situations in a communication.
Fix error in merge
Added role_label to Situation.Argument, mirroring SituationMention.Argument
Added situation_kind_lemma to SituationMention, mirroring Situation
Added python protobuf skeleton
Clean up python code a bit
Merge pull request #30 from hltcoe/python_package

Python package
This compile script is no longer needed after the last checkin.
Merge pull request #28 from dkolas/master

Add event span functionality to JsonUtil