Update code with default boundary checker and try-except
Modify the code structure from functional to oop
Complete a draft of _clean_article
Complete a draft of _split_article
Complete a draft of _segment_text
Add output for _segment_text
Ready to write _find_keywords
Import jieba for chinese segmentation
Add paralell segmentation forjieba
Add chinese, arabic, japanese, indonesian and thai stop words, most of which are from solr/lucene