perf: Optimise from_rng impl for WyRand #15
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Improve the performance of
from_rngconsiderably forthread_rngusages, as well as when seeding from small/quick PRNG sources.When creating a new
WyRandinstance fromthread_rng, the performance offrom_rnghas gone from 6.8ns to 3ns, a 56.3% improvement. The difference for quicker PRNGs is less, but still a nice improvement to have.