2.0
    o	added commonality and comparison clouds
    o	word coloring can be done on a per word basis (thanks to David Robinson)
1.4
    o	change import to include
1.2
    o	Added random word coloring option (thank you xavier dutoit for the patch) 
    o	Fixed max.words bug (thank you Manuel Eugster and Bettina Gruen for the patch) 
1.1
    o	Initial release