Code style issue

[andy840119]

https://www.codefactor.io/repository/github/pierre3/linemessagingapi/issues
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I found some code style issue in codefactor, most of them are simple(like empty space, multi-empty lines etc...)
Is there any need to let me make a pull request to fix them?
Thanks : )
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BTW, will you willing to add codefactor and appveyor to manage code quality in this project?
Of course it's free in github public project.