Motivation:

The goal is to have a strong-typed API for type-safety in arbitrary values, such as trying to use
Int to represent time - as '3' could mean any unit of time, leaving many places for errors and bugs.

Modifications:

Switch all current APIs that accept a `timeout` argument to use `NIO.TimeAmount` instead of a plain `Int`.

Result:

Developers will have an easier time reasoning about their own code as to what values might mean when working with
timeouts in Redis APIs.