added `terminating` property to `TerminableThread`

CHANGELOG.md

 # v2.14.42
+
+* added `terminating` property to `TerminableThread`

satella/__init__.py

-__version__ = '2.14.42a1'
+__version__ = '2.14.42a2'

satella/coding/concurrent/thread.py

@@ -185,7 +185,7 @@ class TerminableThread(threading.Thread):
     >>> a = MeGrimlock().start()
     >>> a.terminate().join()
 
-    Flag whether to terminate is stored in **self.terminating**.
+    Property to check whether to terminate is stored in **self.terminating**.
 
     If you decide to override run(), you got to check periodically for **self._terminating**
     to become true. If it's true, then a termination request was received, and the thread should
@@ -306,6 +306,13 @@ class TerminableThread(threading.Thread):
         if self._terminating:
             raise SystemExit()
 
+    @property
+    def terminating(self) -> bool:
+        """
+        :return: Is this thread either alive and trying to terminate or dead and after termination?
+        """
+        return self._terminating
+
     def terminate(self, force: bool = False) -> 'TerminableThread':
         """
         Signal this thread to terminate.

tests/test_coding/test_concurrent.py

@@ -451,6 +451,7 @@ class TestConcurrent(unittest.TestCase):
         self.assertTrue(t.is_alive())
         dct['a'] = True
         time.sleep(1)
+        self.assertTrue(t.terminating)
         self.assertFalse(t.is_alive())
 
     def test_cg_proforma(self):