• Added support for ThreatConnect Case Management.
  
• Added support for ThreatConnect Service Apps.
  
• Updated templates to support changes in tcex 2.0.
  
• Updated code to support Python 3.6+, removing support for all older versions of Python.
  
• Breaking Change: Multiple updates to playbook module logic.
  
• Breaking Change: Moved datetime methods in tcex.utils.xxx to tcex.utils.datetime.xxx.
  
• Breaking Change: Reworked App decorators to improve usability.
  
• Breaking Change: Renamed start() and done() methods in templates to setup() and teardown().
  
• Breaking Change: Removed tcex.s() method.
  
• Breaking Change: Removed tcex.data_filter property and module.
  
• Breaking Change: Removed tcex.request property and module.
  
• Breaking Change: Removed tcex.resources property and module.
  
• Breaking Change: Removed tcex.safetag() method.
  
• Breaking Change: Removed tcex.safeurl() method.
  
• Breaking Change: Updated tcex.safe_indicator() method input params.
  
• Breaking Change: Updated tcex.safe_url() method input params.
  
• Breaking Change: Updated tcex.safe_tag() method input params.