Release 0.4.4 (2014-03-17)
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* NON-BACKWARDS-COMPATIBLE change to open_with_unicode parameters: now compression_type is a keyword argument; when left out, transparently falls back to opening with no compression, and matches the interface of regular Python open.
* Cleaned up a lot redundancy in open_with_unicode (Thank you, Allison Kaptur!)
Release 0.4.3 (2013-11-23)
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* Wrapped the shutil.rmtree in vocabulary_generator in case of errors due to timing effects of .nsf files.
Release 0.4.2 (2013-11-11)
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* Refined the vocabulary_cutter and vocabulary_generator so they can optionally use a frequency cutoff instead of a size.
Release 0.4.1 (2013-11-09)
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* Refined the nltk_based_segmenter_tokeniser punkt object option; the punkt_obj must be an sbd attribute of an nltk.tokenise.punkt.PunktSentenceTokenizer.
Release 0.4.0 (2013-11-08)
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* nltk_based_segmenter_tokeniser can now read in a punkt object from prior work, for example, a pickled one.
Release 0.3.2 (2013-11-03)
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* Made a new module article_selector, intended to replace article_randomiser.
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