chore: Version bump

pantograph/server.py

@@ -167,7 +167,7 @@ def get_version():
 class TestServer(unittest.TestCase):
 
     def test_version(self):
-        self.assertEqual(get_version(), "0.2.15")
+        self.assertEqual(get_version(), "0.2.16")
 
     def test_expr_type(self):
         server = Server()

src

@@ -1 +1 @@
-Subproject commit 855e7716098667aff52e7374f6b911ba06a08578
+Subproject commit 67e7f22b0a1eb280af5eca078bcb383731b76f37