python3.4 port

hi wroberts! first of all, thank you for providing this python interface - it truly fills a gap after germanet support dropped out of nltk and to me personally, it is an invaluable tool. i just wanted to let you know about some changes i did to make it work for python3.4 (the modifications are not backwards compatible, though). as of yet, i didn't experience any difficulties using the ported version, so i thought i should let you know. all the best! Stefan