• #343 Create separate test environments for when maec is or is not installed
• #339 [Python3 not supported - v1.1/1.2] to_json vaguely broken on some files
• #338 VocabTypes are unhashable in 1.1.1.x on Python 3
• #325 Bug in Indicator class setter for observables property
• Change stix.ToolInformation to use AttackerToolType vocab
• Removed Python 2.6 environment from CI tests