 More efficient RankedFeatureVector from David North.
 More efficient RankedFeatureVector from David North.

ohjeyong/mallet,ohjeyong/mallet,RWArunde/Mallet,steveash/Mallet,palm-toolkit/Mallet,lewg/Mallet,RWArunde/Mallet,palm-toolkit/Mallet,carschno/Mallet,ohjeyong/mallet,lewg/Mallet,RWArunde/Mallet,lewg/Mallet,zxsted/Mallet,steveash/Mallet,zxsted/Mallet,zxsted/Mallet,steveash/Mallet,carschno/Mallet,carschno/Mallet