Implementation of Quoted-Printable based on RFC 2045 (http://tools.ietf.org/html/rfc2045).
This encoding encodes _everything_ that is passed in, it will not try to guess the native line ending for your architecture. In other words, if you are using this to encode text you need to split it into separate lines before encoding and chopping it up.
Further documentation and information can be found at http://www.haskell.org/haskellwiki/Library/Data_encoding.
Chop up a string in parts.