impl Debug for Relation

src/ecs/relation.rs

@@ -133,3 +133,12 @@ impl std::hash::Hash for Relation {
         self.to_bits().hash(state);
     }
 }
+
+impl std::fmt::Debug for Relation {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("Relation")
+            .field("target", &self.target)
+            .field("kind", &self.kind())
+            .finish()
+    }
+}