Bump nltk from 3.2.5 to 3.4.5

[dependabot[bot]]

Bumps nltk from 3.2.5 to 3.4.5.

Changelog

Sourced from nltk's changelog.

Version 3.6.2 2021-04-20

• move test code to nltk/test
• clean up some doctests
• fix bug in NgramAssocMeasures (order preserving fix)
• fixes for compatibility with Pypy 7.3.4

Thanks to the following contributors to 3.6.2 Ruben Cartuyvels, Rob Malouf, Dalton Pearson, Danny Sepler

Version 3.6 2021-04-07

• add support for Python 3.9
• add Tree.fromlist
• compute Minimum Spanning Tree of unweighted graph using BFS
• fix bug with infinite loop in Wordnet closure and tree
• fix bug in calculating BLEU using smoothing method 4
• Wordnet synset similarities work for all pos
• new Arabic light stemmer (ARLSTem2)
• new syllable tokenizer (LegalitySyllableTokenizer)
• remove nose in favor of pytest
• misc bug fixes, code cleanups, test cleanups, efficiency improvements

Thanks to the following contributors to 3.6: Tom Aarsen, K Abainia, Akshita Bhagia, Andrew Bird, Thomas Bird, Tom Conroy, CubieDev, Christopher Hench, Andrew Jorgensen, Eric Kafe, Ilia Kurenkov, Yeting Li, Joseph Manu, Marius Mather, Denali Molitor, Jacob Moorman, Philippe Ombredanne, Vassilis Palassopoulos, Ram Rachum, Danny Sepler, Or Sharir, Brad Solomon, Hiroki Teranishi, Constantin Weisser, Pratap Yadav, Louis Yang

Version 3.5 2020-04-13

• add support for Python 3.8
• drop support for Python 2
• create NLTK's own Tokenizer class distinct from the Treebank reference tokeniser
• update Vader sentiment analyser
• fix JSON serialization of some PoS taggers
• minor improvements in grammar.CFG, Vader, pl196x corpus reader, StringTokenizer
• change implementation = for FreqDist so they are partial orders
• make FreqDist iterable
• correctly handle Penn Treebank trees with a unlabeled branching top node.

Thanks to the following contributors to 3.5: Nicolas Darr, Gerhard Kremer, Liling Tan, Christopher Hench, Alexandre Dias, Hervé Nicol, Pierpaolo Pantone, Bonifacio de Oliveira, Maciej Gawinecki, BLKSerene, hoefling, alvations, pyfisch, srhrshr

Version 3.4.5 2019-08-20

• Fixed security bug in downloader: Zip slip vulnerability - for the unlikely situation where a user configures their downloader to use a compromised server https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14751)

... (truncated)

Commits

• 6b0312a Merge pull request #2446 from sildar/3.4.5
• 3d5e597 Fix devnull error on python2.7
• acca8d5 updates for 3.4.5
• 083bbf0 updates for 3.4.5
• f59d7ed CVE-2019-14751:
• 2554ff4 updates for 3.4.4
• fbda919 drop comment about implementation which is no longer accurate, and which did ...
• 8bcc98a Merge pull request #2319 from BLaZeKiLL/BLaZeKiLL-polt-bug-fix
• f6a4f38 Merge pull request #2291 from alvations/better-panlex
• 8c75c56 Merge pull request #2324 from minho42/Fix-typo
• Additional commits viewable in compare view

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