Refactor lex to return the next token
Refactor lex to return the next token

tildeio/simple-html-tokenizer,greyhwndz/simple-html-tokenizer,Harris-Miller/simple-html-tokenizer,greyhwndz/simple-html-tokenizer,code0100fun/simple-html-tokenizer,tildeio/simple-html-tokenizer,code0100fun/simple-html-tokenizer,tildeio/simple-html-tokenizer,Harris-Miller/simple-html-tokenizer