new file:   AUTHORS
	new file:   CONTRIBUTORS
	new file:   LICENSE
	new file:   Makefile
	modified:   README.md
	new file:   all_test.go
	new file:   ast.go
	new file:   ast2.go
	new file:   ast_test.go
	new file:   generator_linux.go
	new file:   lexer.go
	new file:   parser.go
	new file:   parser.yy
	new file:   prec.go
	new file:   scanner.go
	new file:   scanner.l
	new file:   wl.go
	new file:   xerrors