FIX: WordSegmentation did not work correctly if input string contained words in uppercase. IMPROVEMENT: WordSegmentation now retains/preserves case. IMPROVEMENT: WordSegmentation now keeps punctuation or apostrophe adjacent to previous word. IMPROVEMENT: WordSegmentation now normalizes ligatures: "scientific" -> "scientific". IMPROVEMENT: WordSegmentation now removes hyphens prior to word segmentation (as they might be caused by syllabification). IMPROVEMENT: American English word forms added to dictionary in addition to British English e.g. favourable -> favorable.