IE 9/10 have been EOL - [Internet Explorer End of Support](https://www.microsoft.com/en-us/windowsforbusiness/end-of-ie-support "Internet Explorer End of Support") We should drop it from support targets. ## What's changes - Update `zuul.yml` - Use [babel-preset-env](https://github.com/babel/babel-preset-env "babel-preset-env") insteadof [babel-preset-es2015-ie](https://www.npmjs.com/package/babel-preset-es2015-ie "babel-preset-es2015-ie") - No change code