Modify: don't return 0 count feature
Merge branch 'feature_omit_zero' into develop
Modify: use TEST DATA for evaluation
New: outputFeatureList
Merge branch 'feature_debug' into develop
Modify: use Array to save featureList (not Hash)
Merge branch 'feature_order' into develop
Minor changes: omit argument of makeFeatureList()
Merge branch 'feature_omit_arg' into develop
Merge branch 'develop'