refactoring: typWord to word
edit todo and add some tests
add palindrome test
refactoring: Parser.papillon use WOpenComment, WOpenBracket etc
refactoring: use word token
edit todo
refactoring: hsw to lexer
edit todo
refactoring: remove spaces' etc
edit todo
refactoring: lex 'module' and 'where'
refactoring: Parser.papillon word -> hsw
refactoring: Parser.papillon tribial
refactoring: Parser.papillon word -> hsw
edit todo
refactoring: Parser.papillon remove varWord
refactoring: Parser.papillon integer -> hsw
refactoring: Parser.papillon remove spaces and charLit and stringLit to hsw, word
edit todo
refactoring: generalize char selection