NUlid

This is a maintenance release, no (breaking) changes.. We now publish new Nuget packages with Github workflow actions.

MonotonicUlidRng no longer allows specifying the mask; we default to masking out the MSB of the random part which gives us at least 2^79 bits before running into a sequenceoverflow. Also fixed a bug in the MonotonicUlidRng that caused an InvalidOperationException("Clock moved backwards; this is not supported.")

Added support for monotonic ULIDs

Note: This version contains a (minor) breaking change. The IUlidRng now no longer specifies an integer (length) for the GetRandomBytes() method but requires a DateTimeOffset since the length was always 10. The DateTimeOffset provides some context for RNG's for which the time-part of a ULID a sequence of random bytes is required.

Major improvements in performance have been made; there are no changes in the NUlid public API.