Fast-stemmer is simply a wrapping around multithreaded Porter stemming
algorithm.

This gem adds a String#stem method, and it conflicts with the stemmer gem.  It's
in order of magnitude faster (and uses much less memory) than the latter.

For the original work please see: tartarus.org/~martin/PorterStemmer/

WWW: https://github.com/romanbsd/fast-stemmer