Angular Upgrade Checklist

Things to remember when upgrading Cashmere's angular dependency. Let's keep adding to this!

• Run through update checklist (https://update.angular.io)
  • Update command in the cli: (https://angular.io/cli/update)
• Check versions
  • Ng-select (https://github.com/ng-select/ng-select)
  • Ngx-slider (https://www.npmjs.com/package/ngx-slider-v2?activeTab=readme)
  • Cdk (match angular version)
  • RxJs (https://angular.io/guide/versions)
  • Typescript (https://angular.io/guide/versions)
  • Other packages as needed
• Update secondary package.json files
  • Fabric.Cashmere/projects/cashmere-examples/src/project-template/package.json
  • Fabric.Cashmere/projects/cashmere/package.json
• Update getting started guide as needed (Fabric.Cashmere/guides/getting-started.md)