updated news

NEWS.md

@@ -3,7 +3,7 @@
 
 * bug fix in sentence parsing for parsing exclamatory sentences
 * converted idf calculation from `idf(d, t) = log( n / df(d, t) )` to `idf(d, t) = log( n / df(d, t) ) + 1` to avoid zeroing out common word tfidf values
-* removed dplyr, tidyr, & stringr as dependencies
+* removed dplyr, tidyr, stringr, magrittr, & tm as dependencies
 * created option to bypass assumption that each row/vector-element are different documents in `lexRank` and `unnest_sentences`
 * various bug fixes in token & sentence parsing