Angular 4.2.0 正式版发布了，更新如下：
Bug 修复
animations: ensure web-animations understands a numeric CSS perspective value
animations: evaluate substitutions on option param values
forms: fix min and max validator behavior on non-numbers
router: opening links in new window
upgrade: call setInterval outside the Angular zone
特性
compiler-cli: introduce synchronous codegen API
性能改进
animations: do not create a closure each time a node is removed
animations: only apply :leave flags if animations are set to run
软件详情：https://github.com/angular/angular/blob/master/CHANGELOG.md
来自:开源中国社区
