[Feature Request] Support floating point timeouts

[darintay]

Would be nice to be able to set timeout <1s, especially for tests which otherwise have to wait 1s each time.

I see a related 2015 issue - #16 - but since then Redis blpop added support for float timeouts (2020):

https://redis.io/commands/blpop/

Starting with Redis version 6.0.0: timeout is interpreted as a double instead of an integer.

I wonder if all that is required is to stop casting timeout to an int?