Merge branch 'feature/reorder-base-class-mixins' into 705-model-national-cybersecurity-incident-scoring-system

# Conflicts:
#	src/ssvc/decision_points/base.py

Author: ahouseholder

src/ssvc/decision_points/base.py

@@ -62,7 +62,7 @@ class SsvcDecisionPointValue(_Base, _Keyed, BaseModel):
     """
 
 
-class SsvcDecisionPoint(_Base, _Keyed, _Versioned, _Namespaced, BaseModel):
+class SsvcDecisionPoint(_Valued, _Keyed, _Versioned, _Namespaced, _Base, BaseModel):
     """
     Models a single decision point as a list of values.
     """