* Add semi-colon to suffix punct
* Rename LexStr_casefix to LexStr_norm and LexInt_i to LexInt_id
* Have tokens track tuples that record the start offset and pos tag as well as a lexeme pointer
* Add offsets to Tokens class. Some changes to interfaces, and reorganization of spacy.Lang
* Work on efficiency
* Have tokenizer emit tokens for whitespace other than single spaces
* Test hyphenation etc
* Add file for infix patterns