TODO list for Perl module Games::Jumble

   - Add ability to create custom puzzles by using
     user defined word files.
   - Add functionality so that there is a master clue
     and each jumbled word will contain one or more letters
     that will make up the master clue.
   - Allow user to select number of letters per word.
   - Allow user to select number of master clue letters per word.
   - Move dictionary read to separate method.
