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version 0.4.0

Ruby 3.2+/3.3+ modernization release.
Added Rust/native/pure backend selection and packaged-gem install policy validation.
Added tag-driven release automation and release runbook.
Added precompiled platform gem build/publish pipeline (Linux + macOS) and compatibility policy documentation.

version 0.3.9

merge pull request from @rishabh-tripathi allowing text corpus objects to also be built with an array of strings
couple minor code refinements

version 0.3.8

tokenization changes to support German (courtesy of @LeFnord)
user defined stop word list (also via @LeFnord)

version 0.3.7

change stop word removal back (optimization)

version 0.3.6

added stopwords list and included downcasing to improve performance

version 0.3.5

Bug fix for text documents by Rio Akasaka

Version 0.3.4

Bug fix by Rio Akasaka, fixes issues with segfaults under Ruby 1.9.2

Version 0.3.1

top_words method now returns actual words if they exist in the vocabulary

Version 0.3.0

Completely broke backwards compatibility
Reworked many classes to make functionality more reasonable
Added ability to load documents from text files

Version 0.2.3

Bug fixes by Todd Foster

Version 0.2.2

First stable release