TJ/HM: Support for multiple scorecollectors over different cores
TJ/HM: Boosting for TermFrequencySimilarity
TJ/HM: Removed boost from setRankQuery
TJ/HM: MultiCqlToLuceneQuery
HM/TJ: rankToTermFreq as a util.
HM: Test for ranking in single core query; Not yet working and will be implemented right now