[DROOLS-190] Remove traits when traited object is retracted
[DROOLS-200] clear blockers in left tuples
[DROOLS-223] Serializing and deserializing a PackageDescr causes imports to change to import null
[DROOLS-64] Fix trait registry serialization
[DROOLS-141][BZ-999491] register custom listeners on StatelessKnowledgeSession at each execution
[DROOLS-238] (Trait) hierarchy indexing and lookup is dramatically slower than needed
[DROOLS-236] Test Case
[DROOLS-64] Traits do not comply with inheritance on "modify"
[DROOLS-246]  Ensure traitable classes are declared as @Traitable
[DROOLS-247] Property reactivity does not work with positional/unification constraints
[DROOLS-64] [DROOLS-113] Cleanup applyTrait method, support imperfect don
[DROOLS-248] Declared Traits do not inherit fields if multiple inheritance is used
[DROOLS-250] avoid NPE in MVELConstraint
[DROOLS-244] Sliding windows working incorrectly when timestamp attribute is defined
[DROOLS-253]  Importing a domain class named "Exception" raises an ambiguity exception during RHS compilation
[DROOLS-251]  Classloader fails to resolve when annotation and declared class have the same name
[DROOLS-249] Handle conflicts when using @position in declared types
[DROOLS-10]  Cannot use @timestamp annotation on a java.sql.Timestamp field when declaring metadata for an existing Java type
[DROOLS-18] DRL constraint on a class with is() and get() for the same field
[DROOLS-18] Do not silently ignore errors during read accessor creation