• Added COAs, Exploit Targets, Campaigns, and Related Packages to STIXPackage class
• Updated behavior of id, idref, and timestamp on core STIX constructs to align with best practices
• Added MAEC malware extension
• Improved Identity extension mechanism
• Added Sightings to Indicator
• Updates to OpenIOC test mechanism extension
• Extensions now record input schemalocations on parse
• Added Alternative_ID support to Indicator
• Added support for Composite Indicator Expressions
• Added Handling support to Indicator
• Added several fields to COA and Exploit Target
• Bug fixes