Blake performance numbers for reference:

```
Cpu: Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
```

-- Blake2s

```
Zig --release-fast
    485 Mb/s
Zig --release-safe
    377 Mb/s
Zig
    11 Mb/s
```

-- Blake2b
```
Zig --release-fast
    616 Mb/s
Zig --release-safe
    573 Mb/s
Zig
    18 Mb/s
```