refine the warning logic; previous behaviour was too spammy - separate the "make sure we have strong rng" logic away from "warn about system rng" - limit the number of "system rng only" warnings to 20 - tweak error messages to be more consistent and shorter
refine the warning logic; previous behaviour was too spammy
- separate the "make sure we have strong rng" logic away from "warn about system rng"
- limit the number of "system rng only" warnings to 20
- tweak error messages to be more consistent and shorter

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