Highly untested and may break world

Current release unspecified

• change test comment to list json.
• Added basic junit test for json processing
• more json error handling
• Code cleanup, and made code more reusable.
• Change config over to the new annotation system Adds in-game GUI for configs
• Refactored classes to a proper package structure
• readjust supresswarnings annotation
• Add surpresswarnings to fix build server issue
• Added mcmeta info, added support for announcements in json. for an example see: https://git.io/vAKaS
• Initial update to 1.12.2