Merge pull request #358 from zwagoth/approve-bur-cyclic-implication

[BUR] Fix approving inverse implications when inverse is rejected

app/models/tag_implication.rb

@@ -67,7 +67,7 @@ class TagImplication < TagRelationship
     extend Memoist
 
     def parents
-      self.class.where("consequent_name = ?", antecedent_name)
+      self.class.duplicate_relevant.where("consequent_name = ?", antecedent_name)
     end
     memoize :parents
   end