new features:
- code style (command style)
- tutorials => https://tutorial.goplus.org
- cl: support print/println cmd no params call
- cl: compileLambdaExpr2 support results
- cl: compileAssignStmt support lambda
- parser, cl: compileStructLitInKeyVal support lambda value
changes:
- rewrite all.bash to be install.go script
- sync README_zh.md with README.md content
- gox v1.7.20 (gop cache bugfix)