Migrate from aioredis to redis-py with asyncio support (#233)

* Migrate from aioredis to redis with asyncio support

Add test for redis type
Fix imports from wrong module (for tests_sync)

* fixing merge conflicts and up to dating the lock file

Co-authored-by: Chayim I. Kirshen <c@kirshen.com>

aredis_om/util.py

@@ -0,0 +1,12 @@
+import inspect
+
+
+def is_async_mode():
+    async def f():
+        """Unasync transforms async functions in sync functions"""
+        return None
+
+    return inspect.iscoroutinefunction(f)
+
+
+ASYNC_MODE = is_async_mode()