v2.0.2

Minor Enhancements

• Remove Array#sum monkey patch in favour of #reduce(0, :+) (#20)
• Cache total word counts per category for speed (#4)

Development Fixes

• Add a test for Bayes#untrain_*. (#21)
• Fix link to rb-gsl gem (#24)
• Add helper scripts per Jekyll convention (#25)

Many thanks to @Ch4s3 for all his work on this release!