Minor fixups in TrigramsCorpusCreator
Create generic HighestInfogainCorpusCreator and ElementsFrequencyCorpus
Extract HighestInfogainTrigramsCorpusCreator
Employ HighestInfogainWordsCorpusCreator for CW metrics
Add stub POS-based corpus
Update .gitignore
Fix up a bug in infogain computation
Implement POS-based corpus