Breaking dependency problems in nimble package

[benumbed]

I just installed 0.9.2 and it breaks out of the box if you've had a previous version of chronicles (or rather a previous version's dependencies) installed.

This appears to happen due to a lack of faststreams in the nimble dependencies. A new requires "faststreams >= 0.2.0" should be added to chronicles.nimble, or chronicles attempts to use the previous version of fastreams, which has different module names.

As a side note, json_serialization should be versioned in the nimble file, although right now that wouldn't fix the problem of it also trying to use the exisiting faststreams 0.1.0 instead of 0.2.0. This is due to the json_serialization package version not being revved properly after the fixes for faststreams 0.2.0. I've also filed an issue in the json_serialization package's repo.