feat: increase timestamp precision for v7 uuids #15
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Inspired by https://brandur.org/fragments/uuid-v7-monotonicity and the https://www.rfc-editor.org/rfc/rfc9562.html#monotonicity_counters, Use increased timestamp precision to replace the first 12 bits of `rand_a` field. This helps ensure monotonicity within the same millisecond.
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Inspired by https://brandur.org/fragments/uuid-v7-monotonicity and the
https://www.rfc-editor.org/rfc/rfc9562.html#monotonicity_counters
Use increased timestamp precision to replace the first 12 bits of
rand_afield. This helps ensure monotonicity within the same millisecond.Closes #14