This release includes the following changes:
- #305 Updates support of STIX 2.1 to WD06
- #304 Updates semantic equivalence to latest draft, and allows programmatic
detailed logging - Adds Python 3.8 support
- #297 Fixes bug with File.contains_refs
- #311 Fixes several DeprecationWarnings
- #315 Fixes parsing embedded external references with custom properties
- #316 Fix socket extension key checking
- #317 Fixes checking of Indicator's pattern property based on pattern_version