Target level cleaning had been forgotten

... when action level cleaning was added

Test both while we're at it, as this is pretty critical for actions to
clean up properly

tests/test_target.py

@@ -72,6 +72,37 @@ async def test_function():
     await Stub()(hello)
 
 
+@pytest.mark.asyncio
+async def test_action_clean():
+    class Example:
+        def __init__(self):
+            self.was_called = False
+        async def clean(self, target, result):
+            self.was_called = True
+        async def __call__(self, target):
+            raise Exception('lol')
+
+    action = Example()
+    target = Stub()
+    with pytest.raises(Exception):
+        await target(action)
+    assert action.was_called
+
+
+@pytest.mark.asyncio
+async def test_target_clean():
+    class Example(Stub):
+        def __init__(self, action):
+            self.was_called = False
+            super().__init__(action)
+        async def clean(self, target, result):
+            self.was_called = True
+
+    target = Example(Error())
+    await target()
+    assert target.was_called
+
+
 @pytest.mark.asyncio
 async def test_method():
     class Example: