tree 9a415e56e5cf3504c2a8b82a3d2bd7c8c0c19d2f
parent 21fc82b0b9b5d9ffd7d69c3193679ce46eb738dc
author Caleb Spare <cespare@gmail.com> 1712254583 -0700
committer Caleb Spare <cespare@gmail.com> 1712260810 -0700

Add initial support for custom seeds

This adds support for custom seeds when using a Digest (but not to the
one-shot functions Sum64 and Sum64String).

The seed is not stored in the digest itself -- every Reset uses a zero
seed and (Un)MarshalBinary is unchanged. This is simpler for backward
compatibility but may be something to reconsider if we rework the API
for a v3.