practice-calculator v3.0.0

npm lib setting

1. npm login

• npm 사이트에 로그인 부터 하자

    # in terminal
    npm login

2. Major version vs Minor version

    pnpm run release OR pnpm run pre-release

    ## major version
    1.0.0
    2.0.0
    3.0.0

    ## minor version
    1.1.0
    1.2.0
    1.3.0

    ## patchs
    1.0.1
    1.0.2
    1.0.3