[Feature Request] Is it possible to support picking only one random upstream?

[PeterDaveHello]

https://0xerr0r.github.io/blocky/configuration/

Blocky picks 2 random resolvers from the list for each query and returns the answer from the fastest one. This improves your network speed and increases your privacy - your DNS traffic will be distributed over multiple providers.

According to the document(Sorry that I didn't read the source code), Blocky picks 2 random upstream resolvers, I wonder if Blocky can support to just pick only one random upstream, so that we won't share each query request to two resolvers? Thanks!

[kwitsch]

More flexible upstream strategies where proposed and discussed in #355.
This may be an addition to that.

[0xERR0R]

As mentioned by @kwitsch, this would be addressed in #355