Asphalt-redis

- Removed explicit run-time argument type checks and the ``typeguard`` dependency

- **BACKWARD INCOMPATIBLE** Upgraded Asphalt dependency to ~4.7
- **BACKWARD INCOMPATIBLE** Switched backing library from aioredis to the official
redis-py (which now has asyncio support)
- **BACKWARD INCOMPATIBLE** Refactored component to only provide a single Redis client
(you will have to add two components to get two clients)
- **BACKWARD INCOMPATIBLE** Dropped the context attribute (use dependency injection
instead)

- Fixed overly restrictive dependency constraint on Asphalt core

- **BACKWARD INCOMPATIBLE** Upgraded aioredis dependency to ~2.0
- Added support for Python 3.10
- Dropped support for Python 3.5 and 3.6

- Unpinned aioredis dependency to allow upgrading from v1.0 (the version pinning was an accident)

- Updated to work with aioredis 1.0+