ATLAS Data 4.4, ATT&CK Enterprise v13

Generate STIX and layers for ATLAS Data 4.3.0, with new case study an…

…d new techniques

ATLAS Navigator Data 1.3.0 - ATLAS STIX includes ATT&CK Enterprise v1…

…2, new case study, new technique

Update submodule

Update atlas-data to 4.1.0

Initial GitHub release of 1.0.0