Really reliable replicated replicas

- Change to accept a list of hosts, rather than a single host
- Generates a clientlist which will zip up a list of `host:port`

Cool.

![](http://24.media.tumblr.com/c1f582346c56ea9fea715f4cdc36e49b/tumblr_mzban8MjJN1qhwlspo1_500.jpg)