Nltk

* Support Python 3.6
* New interface to CoreNLP
* Support synset retrieval by sense key
* Minor fixes to CoNLL Corpus Reader, AlignedSent
* Fixed minor inconsistencies in APIs and API documentation
* Better conformance to PEP8
* Drop moses.py (incompatible license)

Special thanks to Liling Tan for leading our transition to Python 3.6.
Thanks to other contributors listed here: https://github.com/nltk/nltk/blob/develop/AUTHORS.md

Ali Abdullah, Lakhdar Benzahia, Henry Elder, Campion Fellin,
Tsolak Ghukasyan, Thanh Ha, Jean Helie, Nelson Liu,
Nathan Schneider, Chintan Shah, Fábio Silva, Liling Tan,
Ziyao Wei, Zicheng Xu, Albert Au Yeung, AbdealiJK,
porqupine, sbagan, xprogramer

Alex Constantin, Hatem Nassrat, Liling Tan

Mark Amery, Carl Bolz, Abdelhak Bougouffa, Matt Chaput, Michael Goodman,
Jaehoon Hwang, Naoya Kanai, Jackson Lee, Christian Meyer, Dmitrijs Milajevs,
Adam Nelson, Pierpaolo Pantone, Liling Tan, Vilhjalmur Thorsteinsson,
Arthur Tilley, jmhutch, Yorwba, eromoe and others

Prasasto Adi, Mark Amery, Geoff Bacon, George Berry, Colin Carroll, Alexis Dimitriadis,
Nicholas Fabina, German Ferrero, Tsolak Ghukasyan, Hyuckin David Lim, Naoya Kanai,
Greg Kondrak, Igor Korolev, Tim Leslie, Rob Malouf, Heguang Miao, Dmitrijs Milajevs,
Adam Nelson, Dennis O'Brien, Qi Liu, Pierpaolo Pantone, Andy Reagan, Mike Recachinas,
Nathan Schneider, Jānis Šlapiņš, Richard Snape, Liling Tan, Marcus Uneson,
Linghao Zhang, drevicko, SaintNazaire

Andrew Giel, Casper Lehmann-Strøm, David Madl, Tanin Na Nakorn,
Guilherme Nardari, Philippe Ombredanne, Nathan Schneider, Liling Tan,
Josiah Wang, venticello