[Nutch Wiki] Update of "Features" by JakeVanderdray

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The following page has been changed by JakeVanderdray:
http://wiki.apache.org/nutch/Features

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   *What kind of searches does Nutch support? (quoted, nested, truncation, wildcarding [and where], Boolean),
   *Is stemming an option?
+     ** According to the Lucene in Action book: "Nutch does not use stemming or term aliasing of any kind.  Search engines have not historically done much stemming, but it is a question that comes up regularly." -- page 329
   *What kind of stemming does Nutch use? (and can you add exceptions/changes?)
+     ** See previous answer :)
   *Does Nutch support Boolean operators? (can you use Google-like plus or minus or are you stuck with 1990s terms?)
   *Does Nutch support weighted field searching, synonym support?
   *What kinds of indexes does Nutch build? (multi-format indexing, incremental indexing, spell-check support, thesauri support, fielded searching,  rank-by-reputation?)