NLTK 3.4 is now available from:
https://pypi.python.org/pypi/nltk
NLTK 3.4 includes the following:
* Support Python 3.7
* New Language Modelng package
* Cistem Stemmer for German
* Support Russian National Corpus incl POS tag model
* Krippendorf Alpha inter-rater reliability test
* Comprehensive code clean-ups
* Switch continuous integration from Jenkins to Travis
Special thanks to Ilia Kurenkov (Language Model package), Liling Tan (Python 3.7, Travis-CI), and purificant (code cleanups).