Using GLibEventLoop on Python 3.8 causes assertion: not instance of AbstractEventLoopPolicy

[craftyguy]

Traceback (most recent call last):
  File "app.py", line 11, in <module>
    asyncio.set_event_loop_policy(asyncio_glib.GLibEventLoop())
  File "/usr/lib64/python3.8/asyncio/events.py", line 731, in set_event_loop_policy
    assert policy is None or isinstance(policy, AbstractEventLoopPolicy)
AssertionError
Exception ignored in: <function BaseEventLoop.__del__ at 0x7fe1607db3a0>
Traceback (most recent call last):
  File "/usr/lib64/python3.8/asyncio/base_events.py", line 652, in __del__
  File "/usr/lib64/python3.8/asyncio/unix_events.py", line 58, in close
  File "/usr/lib64/python3.8/asyncio/selector_events.py", line 92, in close
  File "/usr/lib64/python3.8/asyncio/selector_events.py", line 99, in _close_self_pipe
  File "/usr/lib64/python3.8/asyncio/selector_events.py", line 281, in _remove_reader
  File "/home/clayton/repos/app/venv/lib/python3.8/site-packages/asyncio_glib/glib_selector.py", line 88, in unregister
  File "/home/clayton/repos/app/venv/lib/python3.8/site-packages/asyncio_glib/glib_selector.py", line 59, in unregister

Can be reproduced with this on python 3.8:

import asyncio
import asyncio_glib


async def main():
    print('good bye world')
    await asyncio.sleep(42)


asyncio.set_event_loop_policy(asyncio_glib.GLibEventLoop())
loop = asyncio.get_event_loop()
loop.run_until_complete(main())

[craftyguy]

oof, I should have passed asyncio_glib.GLibEventLoopPolicy instead of asyncio_glib.GLibEventLoop, sorry about the unwarranted issue filing!