Main Authors:
     Jason Baldridge <jmb@cogsci.ed.ac.uk>
     Gann Bierner <gbierner@cogsci.ed.ac.uk>

Contributors:
     Tom Morton - maximum entropy tokenizer
     Eric Friedman - sentence detector improvements
     Meghan Pike - windows compatibility, GUI
     Mike Atkinson - multiword expression package
     Joerg Tiedemann - NP chunker package