1.2.0
    - encode/decode errors will now raise a condition object of type
      (exn bencode)
1.1.1
    - bugfix for CHICKEN 4.10.1 (but should probably have been failing before)
      caused all decoding procedures to fail incorrectly on unexpected EOF
1.1.0
    - added bencode->string
    - added string->bencode
1.0.0
    - initial release
    - added read-bencode
    - added write-bencode