NEXT
+ [API CHANGES]
+
+ * Roles now have their own default attribute metaclass to use during
+ application to a class, rather than just using the class's
+ attribute_metaclass. This is also overridable via ::MetaRole, with the
+ applied_attribute key in the role_metaroles hashref (doy).
+
[ENHANCEMENTS]
* We now load the roles needed for native delegations only as needed. This