Calling handy-redis users: any interest in an ioredis wrapper?

[mmkal]

The API surface of this library is actually closer to ioredis than node_redis. ioredis supports promises out of the box, and has a slightly cleaner multi() design.

It's pretty easy to make handy-redis wrap an ioredis client as well, and the API is basically the same. This library would continue to provide types for the actual commands, and leave operations like pub/sub and lua scripting to the underlying client.

Here's the POC pull request: #241