[0.1.0] Mirgrator raise an exception

[igorMIA]

Using python3.8(cpython) with redis om 0.1.0. When trying to run migrations in an async way get the error:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/slixmpp/xmlstream/xmlstream.py", line 886, in handler_callback_routine
    await cb(data)
  File "worker.py", line 271, in init_worker
    await Migrator().run()
  File "/usr/local/lib/python3.8/site-packages/aredis_om/model/migrations/migrator.py", line 163, in run
    await self.detect_migrations()
  File "/usr/local/lib/python3.8/site-packages/aredis_om/model/migrations/migrator.py", line 118, in detect_migrations
    await conn.ft(cls.Meta.index_name).info()
  File "/usr/local/lib/python3.8/site-packages/redis/commands/search/commands.py", line 384, in info
    it = map(to_string, res)
TypeError: 'coroutine' object is not iterable

Downgrade to version 0.0.26 fixes the problem