[feature/cliff] add cliff
[feature/cliff] update README.md
[feature/cliff] add command list for stack/app
[feature/cliff] optimize code
[feature/cliff] adjust command list
[feature/cliff] solve conflict
[feature/cliff] 1.optimize code 2.add save_session() and load_session()
[feature/cliff] command - stack pull
[feature/cliff] remove demo
[feature/cliff] optimize stack pull and stack info
[feature/cliff] 1.rename constant.py to Constant.py 2.add Global.py 3. add stack run(not finish)
[feature/cliff] adjust python object data format
[feature/cliff] solve conflict
Merge branch 'feature/cliff' into develop
[develop] remove redundant run.py