pubsub command

[adityagodbole]

The client uses the pubsub method to create and return the pubsub client. This masks the redis PUBSUB command.
There are two ways I can think of around this

1. Change the name of the pubsub method to something like pubsub_client
2. Pass self to PubsubClient.new in the pubsub method and keep a reference to it in the Pubsubclient object. Forward the call to this Client object in a method called pubsub on the PubsubClient object.

[mloughran]

Good point; I don't think the command existed when I introduced this API. It's annoying, but I think the correct solution is to rename the pubsub method to pubsub_client as you suggest.

[adityagodbole]

That would be a breaking change though, and would have to be announced and versioned accordingly