cti/CHANGELOG.md

Changes to STIX for July 2019 ATT&CK Content Release

1. Descriptions added to relationships of type mitigates under the enterprise domain

Changes to STIX for April 2019 ATT&CK Content Release

1. x_mitre_impact_type added for enterprise techniques within the Impact tactic
2. Descriptions added to relationships between software/groups

Changes to STIX for October 2018 ATT&CK Content Release

1. x_mitre_platforms added for enterprise malware/tools
2. x_mitre_detection added to attack-patterns
3. Custom MITRE attributes removed from descriptions in attack-patterns
4. Alias descriptions added for malware/tools/intrusion-sets as external references
5. Descriptions added to relationships between groups/attack-patterns in PRE-ATT&CK
6. Names of ATT&CK objects replaced in descriptions and x_mitre_detection fields with markdown links
7. CAPEC ids added to external references for attack-patterns
8. Citations in alias descriptions added as external references in the object containing the alias description
9. Added x-mitre-tactic and x-mitre-matrix objects
10. Changed ===Windows=== subheadings to ### Windows subheadings (Windows is just one example)
11. Added space between asterisks (ex. *Content to * Content) to populate markdown correctly
12. Changed "true" to True in x_mitre_deprecated
13. Added old ATT&CK IDs to Mobile/PRE-ATT&CK objects whose IDs have changed as x-mitre-old-attack-id