fix FST enumerator
fix unit test
prefer console log; fix incorrect index options; fix unit test
implement Lucene49NormsPorducer ctor
imlement NormsProducer.readFields()
implement Lucene41PostingsReader.decodeTerm()
implement NormsProducer.numeric(0)
remove debug logic
implement fst.findTargetArc()
implement CompressingStoredFieldsReader.visitDocument(); fix heap sort