1、npm 安装不上有3个点分隔的版本号的包，版本号只能有2个点分隔，要这样的"version":"(\d).(\d).(\d)",
2、dcloudio采用了这个方案："@dcloudio/vue-cli-plugin-uni": "^2.0.0-31420210305001",
https://docs.npmjs.com/about-semantic-versioning