Angular 5.0.5 和 5.1.0 rc.1 发布，Web 前端框架
angular2 RC3 版本发布了，主要更新如下：
- This release includes a fix for a major performance regression in RC2
- The @angular/router project has been merged into our main repository ( It will retain its own version numbers and release cycle )
- The Router documentation is now available.
- Content Security – Angular Content Security features are feature-complete and documented
- The new Forms cookbook is available