Error handling for different cases

[pratik151192]

Looking at the error file in the Redis package, only redis.Nil is exposed as an explicit error when the key doesn't exist. However, how can I figure out whether the error was a timeout or server exception apart from parsing the message. I believe the previous versions had a Timeout type that can be checked against which is no longer available. Similarly, some SDKs have a RedisCommandException for any illegal arguments. Any help is appreciated!