KarpelesLab / anyhash / 24210909612

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Add seed and secret support for murmur3, xxh32, xxh64, xxh3, xxh128

New Options struct with Seed and Secret fields, passed via New():
  h, _ := anyhash.New("murmur3a", anyhash.Options{Seed: 42})
  h, _ := anyhash.New("xxh3", anyhash.Options{Seed: 12345})
  h, _ := anyhash.New("xxh128", anyhash.Options{Secret: mySecret})

Seed and Secret are mutually exclusive for xxh3/xxh128.
All seeded outputs verified against PHP's hash_init() with options.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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