Parameterized generics cannot be used with class or instance checks

Full trace of the error message is below when I ran `python main.py` (I'm running Python 3.6.5 Anaconda)

```
Traceback (most recent call last):
File "main.py", line 38, in
run_demo()
File "main.py", line 22, in run_demo
demo.run(mm, mmr_engine, env, skip_rounds=60)
File "C:\Users\hsamuel\Downloads\matchmaker-master\core\demo.py", line 51, in run
self._main_loop(skip_rounds)
File "C:\Users\hsamuel\Downloads\matchmaker-master\core\demo.py", line 56, in _main_loop
self.engine.one_round()
File "C:\Users\hsamuel\Downloads\matchmaker-master\core\engine.py", line 63, in one_round
self._find_lobbies_and_start_games()
File "C:\Users\hsamuel\Downloads\matchmaker-master\core\engine.py", line 70, in _find_lobbies_and_start_games
self._match_maker.find_lobbies(self._queue, self._on_found_lobby)
File "C:\Users\hsamuel\Downloads\matchmaker-master\core\matchmakers.py", line 20, in find_lobbies
found_lobby_callback(t1, t2)
File "C:\Users\hsamuel\Downloads\matchmaker-master\core\engine.py", line 106, in _on_found_lobby
if not (isinstance(team_1, List[Queuer]) and isinstance(team_2, List[Queuer])):
File "C:\Users\hsamuel\AppData\Local\Continuum\anaconda2\envs\py36\lib\typing.py", line 1162, in __instancecheck__
return issubclass(instance.__class__, self)
File "C:\Users\hsamuel\AppData\Local\Continuum\anaconda2\envs\py36\lib\typing.py", line 1148, in __subclasscheck__
raise TypeError("Parameterized generics cannot be used with class "
TypeError: Parameterized generics cannot be used with class or instance checks
```