SnowballStemmerWrapper: SnowballStemmer.create() -> create()
New (scored) data type NamedEntity, make Sentence carry score, propagate scores to answer candidates
AbstractAnswerGenerator: Log the final answer
AnswerGenerator: Fix the answer sorting; improve the debug print
New scoring method SentenceSimilarityUnigram, used for sentence scoring in NEInformationExtractor

This was the last missing bit to achieve a fully working (though very basic)
NLP pipeline for question answering. Many improvements remain, but in principle,
BlanQA can now answer a general question on an arbitrary text file snippet.