Angular 2.4.9和4.0.0 rc2发布， Web前端框架

Angular 是一款十分流行且好用的 Web 前端框架，目前由 Google 维护。

Angular 4.0.0 rc2 更新内容：(2017-03-02)

Bug 修复

• animations: make animations work in AOT

• compiler: apply element bindings before host bindings

• compiler: fix identifier names of EMPTY_MAP / EMPTY_ARRAY 

• compiler: quote animation in RendererTypeV2 and skip if empty

• core: call lifecycle hooks for siblings in declaration order

• core: fix isComponentView() and isEmbeddedView() tests

• language-service: tolerate errors in decorators

• platform-server: don't setup Testability and TestabilityRegistry on the server

• tsc-wrapped: validate metadata in static members of a class

• upgrade: fix upgrade component Closure optimization

性能改进：

• delete pre-view-engine core, compiler, platform-browser, etc code

• compiler: make identifiers for generated code small to improve dev size
  

Angular 2.4.9 更新内容：(2017-03-02)

Bug 修复

• http: Make ResponseOptionsArgs an interface 

• router: improve robustness

Reverts

• fix(router): do not finish bootstrap until all the routes are resolved