Add a test.
Use BABEL:STRING-TO-OCTETS instead.
Switch from FLEXI-STREAMS to FAST-IO.
Use SBCL's rotate-byte when available.
Rearranged declarations in MIX/128.
Use specialized arrays to store seeds.
Re-use seeds.
Remove FAST-PEEK-BYTE.
Refactor MIX/128.
Need an eval-when.