AUTHORS:
Torbjorn Sjostrand <torbjorn@thep.lu.se>
Stephen Mrenna <mrenna@fnal.gov>
Stefan Prestel <stefan.prestel@thep.lu.se> 
Peter Skands <peter.skands@cern.ch>

FORMER AUTHORS:
Stefan Ask <ask.stefan@gmail.com>
Richard Corke <richard.corke@thep.lu.se>