What's Changed

• Add zero-dependency native C extension for LSI acceleration by @cardmagic in https://github.com/cardmagic/classifier/pull/89
• feat: add thread safety to Bayes and LSI classifiers by @cardmagic in https://github.com/cardmagic/classifier/pull/86
• feat: add save/load methods for classifier persistence by @cardmagic in https://github.com/cardmagic/classifier/pull/85
• perf: cache expensive computations in Bayes classifier by @cardmagic in https://github.com/cardmagic/classifier/pull/84
• feat(lsi): expose tuning parameters with validation and introspection API by @cardmagic in https://github.com/cardmagic/classifier/pull/92
• Add rubyclassifier.com links to README and gemspec by @cardmagic in https://github.com/cardmagic/classifier/pull/94
• feat: add pluggable persistence backends with storage API by @cardmagic in https://github.com/cardmagic/classifier/pull/93

Full Changelog: https://github.com/cardmagic/classifier/compare/v2.0.0...v2.1.0