anchor.diff:  
     ## "Style Guide" with _NgModules_ (2016-09-27)
   
  -  [StyleGuide](style-guide.html) explains our recommended conventions for Angular modules (NgModule).
  +  [StyleGuide](style-guide.html) explains recommended conventions for Angular modules (NgModule).
     Barrels now are far less useful and have been removed from the style guide;
     they remain valuable but are not a matter of Angular style.
  -  We also relaxed the rule that discouraged use of the `@Component.host` property.
  +  Also relaxed the rule that discouraged use of the `@Component.host` property.
   
     ## _moduleId: module.id_ everywhere (2016-09-25)
   
     Sample components that get their templates or styles with `templateUrl` or `styleUrls`
     have been converted to _module-relative_ URLs.
  -  We added the `moduleId: module.id` property-and-value to their `@Component` metadata.
  +  Added the `moduleId: module.id` property-and-value to their `@Component` metadata.
     
     This change is a requirement for compilation with AOT compiler when the app loads
     modules with SystemJS as the samples currently do.
  
positive.code:   You are no longer asked to copy-and-paste code into setup files that were not explained anyway.
  
    ## Sync with Angular v.2.2.0 (2016-11-14)
    Docs and code samples updated and tested with Angular v.2.2.0 
  
    ## UPDATE: NgUpgrade Guide for the AOT friendly _upgrade/static_ module (2016-11-14)
    The updated [NgUpgrade Guide](upgrade.html) guide covers the 
  
negative.code:   It includes important advice on optimizing for production.
  
    ## Hierarchical Dependency Injection: refreshed (2017-01-13)
    [Hierarchical Dependency Injection](hierarchical-dependency-injection.html) guide is significantly revised.
    Closes issue #3086.
    Revised samples are clearer and cover all topics discussed.
  
    ## Miscellaneous (2017-01-05)
    * [Setup](setup.html) guide: 
    added (optional) instructions on how to remove _non-essential_ files. 
    * No longer consolidate RxJS operator imports in `rxjs-extensions` file; each file should import what it needs.
    * All samples prepend template/style URLs with `./` as a best practice.
    * [Style Guide](style-guide.html): copy edits and revised rules.
  
    ## Router: more detail (2016-12-21)
    Added more information to the [Router](router.html) guide 
    including sections named outlets, wildcard routes, and preload strategies.
  
    ## HTTP: how to set default request headers (and other request options) (2016-12-14)
    Added section on how to set default request headers (and other request options) to 
    [HTTP](server-communication.html#override-default-request-options) guide.
  
    ## Testing: added component test plunkers (2016-12-02)
    Added two plunkers that each test _one simple component_ so you can write a component test plunker of your own: <live-example name="setup" plnkr="quickstart-specs">one</live-example> for the QuickStart seed's `AppComponent` and <live-example name="testing" plnkr="banner-specs">another</live-example> for the Testing guide's `BannerComponent`. 
  